21479985 (number)
21479985 is an odd 8-digits composite number following 21479984 and preceding 21479986. In scientific notation, it is written as 2.1479985 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 56 positive divisors. There are 11158560 positive integers (up to 21479985) that are relatively prime to 21479985.
Interesting facts
- 21479985 has 56 divisors, whose sum is 39662784
- The reverse of 21479985 is 58997412
- Previous prime number is 71
Basic properties
- Is Prime? no
- Number parity odd
- Number length 8
- Sum of Digits 45
- Digital Root 9
Name
Name | twenty-one million four hundred seventy-nine thousand nine hundred eighty-five |
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Notation
Scientific notation | 2.1479985 × 10^7 |
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Engineering notation | 2.1479985 × 10^6 |
Prime Factorization of 21479985
Prime Factorization 5 × 3 × 27 × 9 × 71 × 83
Composite numberω | Distinct Factors | 6 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 21479985 | Product of the distinct prime numbers |
The prime factorization of 21479985 is 5 × 3 × 27 × 9 × 71 × 83. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21479985)
Multiplication
n×yn×2 | 42959970 |
---|---|
n×3 | 64439955 |
n×4 | 85919940 |
n×5 | 107399925 |
Division
n÷yn÷2 | 10739992.5 |
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n÷3 | 7159995 |
n÷3 | 5369996.25 |
n÷5 | 4295997 |
Exponentiation
nyn2 | 461389755600225 |
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n3 | 9.9106450294465E+21 |
n4 | 2.1288050657284E+29 |
n5 | 4.5726700879769E+36 |
Nth Root
y√n2√n | 4634.6504722579 |
---|---|
3√n | 277.97857519963 |
4√n | 68.078267253639 |
5√n | 29.268926546893 |
Divisors of 21479985
56 divisors
τ | Total Divisors | 56 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21479984 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.017857142857143 | Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) |
G | Geometric Mean | 1 | Returns the nth root of the product of n divisors |
H | Harmonic Mean | 56 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21479985 can be divided by 56 positive divisors. The sum of these divisors (counting 21479985) is 1, the average is 0.017857142857143.
Base conversion 21479985
Base | System | Value |
---|---|---|
2 | Binary | 1010001111100001000110001 |
3 | Ternary | 1111102022000000 |
4 | Quaternary | 1101330020301 |
5 | Quinary | 20444324420 |
6 | Senary | 2044220213 |
8 | Octal | 121741061 |
10 | Decimal | 21479985 |
12 | Duodecimal | 723a669 |
16 | Hexadecimal | 147c231 |
20 | Vigesimal | 6e4jj5 |
36 | Base36 | cse29 |
Cryptographic Hash Functions
md5 | a865dbdd98ea169b45d7cd822c5c4582 |
---|---|
sha1 | 4343302833c035dceb4af6bc8239da1ba9420e11 |
sha256 | 98bd7544da85bc526c38f182dc9aa2de7c8826f9779db12f9090d33a430b2724 |
sha512 | 643d9194f4195a41fa7712fe84ea07a6953ae972d1cf40abc0ca9b3ba97aa3774bdbbb4c58886047a5339f9b927630fe9c685ea2282f08b56cb213b6bb640769 |
ripemd-160 | fd8289ffc7188357714b53bec5577e4e93d1df70 |
21479985 as geometric shapes
Circle
Radius = nDiameter | 42959970 |
---|---|
Circumference | 134962726.15044 |
Area | 1.4494986666353E+15 |
Sphere
Radius = nVolume | 4.151361282246E+22 |
---|---|
Surface area | 5.797994666541E+15 |
Circumference | 134962726.15044 |
Square
Length = nPerimeter | 85919940 |
---|---|
Area | 461389755600225 |
Diagonal | 30377286.106571 |
Cube
Length = nSurface area | 2768338533601350 |
---|---|
Volume | 9.9106450294465E+21 |
Space diagonal | 37204425.365817 |
Equilateral Triangle
Length = nPerimeter | 64439955 |
---|---|
Area | 1.9978762469784E+14 |
Altitude | 18602212.682909 |
Triangular Pyramid
Length = nSurface area | 1.9978762469784E+14 |
---|---|
Volume | 1.1679807177091E+21 |
Height | 10125762.035524 |