28615 (number)
28,615 (twentyeight thousand six hundred fifteen) is an odd fivedigits composite number following 28614 and preceding 28616. In scientific notation, it is written as 2.8615 × 10^{4}. The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors. There are 22,272 positive integers (up to 28615) that are relatively prime to 28615.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 22
 Digital Root 4
Name
Short name  28 thousand 615 

Full name  twentyeight thousand six hundred fifteen 
Notation
Scientific notation  2.8615 × 10^{4} 

Engineering notation  28.615 × 10^{3} 
Prime Factorization of 28615
Prime Factorization 5 × 59 × 97
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  3  Total number of prime factors 
rad(n)  Radical  28615  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 28,615 is 5 × 59 × 97. Since it has a total of 3 prime factors, 28,615 is a composite number.
Divisors of 28615
8 divisors
τ(n)  Total Divisors  8  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  35280  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  6665  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  4410  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  169.15968786918  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  6.4886621315193  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 28,615 can be divided by 8 positive divisors (out of which 0 are even, and 8 are odd). The sum of these divisors (counting 28,615) is 35,280, the average is 4,410.
Other Arithmetic Functions (n = 28615)
φ(n)  Euler Totient  22272  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  2784  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3115  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 22,272 positive integers (less than 28,615) that are coprime with 28,615. And there are approximately 3,115 prime numbers less than or equal to 28,615.
Divisibility of 28615
m  2  3  4  5  6  7  8  9 

n mod m  1  1  3  0  1  6  7  4 
The number 28,615 is divisible by 5.
Classification of 28615
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 LucasCarmichael
 Sphenic
Base conversion (28615)
Base  System  Value 

2  Binary  110111111000111 
3  Ternary  1110020211 
4  Quaternary  12333013 
5  Quinary  1403430 
6  Senary  340251 
8  Octal  67707 
10  Decimal  28615 
12  Duodecimal  14687 
16  Hexadecimal  6fc7 
20  Vigesimal  3baf 
36  Base36  m2v 
Basic calculations (n = 28615)
Multiplication
n×yn×2  57230 

n×3  85845 
n×4  114460 
n×5  143075 
Division
n÷yn÷2  14307.500 

n÷3  9538.333 
n÷4  7153.750 
n÷5  5723.000 
Exponentiation
n^{y}n^{2}  818818225 

n^{3}  23430483508375 
n^{4}  670463285592150625 
n^{5}  19185306917219390134375 
Nth Root
^{y}√n^{2}√n  169.15968786918 

^{3}√n  30.586603274685 
^{4}√n  13.006140390953 
^{5}√n  7.7860779988287 
28615 as geometric shapes
Circle
Radius = nDiameter  57230 

Circumference  179793.34756494 
Area  2572393320.2854 
Sphere
Radius = nVolume  98145379813290 

Surface area  10289573281.142 
Circumference  179793.34756494 
Square
Length = nPerimeter  114460 

Area  818818225 
Diagonal  40467.721087306 
Cube
Length = nSurface area  4912909350 

Volume  23430483508375 
Space diagonal  49562.633858583 
Equilateral Triangle
Length = nPerimeter  85845 

Area  354558691.96584 
Altitude  24781.316929292 
Triangular Pyramid
Length = nSurface area  1418234767.8634 

Volume  2761308962541.9 
Height  23364.049663247 
Cryptographic Hash Functions
md5  083b5b1364b26b95b1cf37dcdf85c44e 

sha1  557758481acb52ec49e080f64243779c7efead6d 
sha256  847654ea35f3cc179ac90db2b951ae2aff124425dd59d6768dd64125d9ce2bb6 
sha512  921a34d2a41204ae1e152d4bc20da6953c90fe08017ae339505af704b987170466f2a05d22c6406048fed1c90591192f633edfc743b61b91e0fe693a5afd0fc6 
ripemd160  4d63fa708becc6acae29a34d6298183dd6012f48 