21581312 (number)
21581312 is an even 8-digits composite number following 21581311 and preceding 21581313. In scientific notation, it is written as 2.1581312 × 10^7. The sum of its digits is 23. It has a total of 11 prime factors and 40 positive divisors. There are 10598400 positive integers (up to 21581312) that are relatively prime to 21581312.
Interesting facts
- 21581312 has 40 divisors, whose sum is 43890792
- The reverse of 21581312 is 21318512
- Previous prime number is 61
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 23
- Digital Root 5
Name
Name | twenty-one million five hundred eighty-one thousand three hundred twelve |
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Notation
Scientific notation | 2.1581312 × 10^7 |
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Engineering notation | 2.1581312 × 10^6 |
Prime Factorization of 21581312
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 61 × 691
Composite numberω | Distinct Factors | 3 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 11 | Total number of prime factors |
rad | Radical | 84302 | Product of the distinct prime numbers |
The prime factorization of 21581312 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 61 × 691. Since it has a total of 11 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21581312)
Multiplication
n×yn×2 | 43162624 |
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n×3 | 64743936 |
n×4 | 86325248 |
n×5 | 107906560 |
Division
n÷yn÷2 | 10790656 |
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n÷3 | 7193770.6666667 |
n÷3 | 5395328 |
n÷5 | 4316262.4 |
Exponentiation
nyn2 | 465753027641344 |
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n3 | 1.0051561404472E+22 |
n4 | 2.1692588275708E+29 |
n5 | 4.6815451566559E+36 |
Nth Root
y√n2√n | 4645.5690717069 |
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3√n | 278.4149901648 |
4√n | 68.15841159906 |
5√n | 29.296488505028 |
Divisors of 21581312
40 divisors
τ | Total Divisors | 40 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21581311 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.025 | 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 | 40 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21581312 can be divided by 40 positive divisors. The sum of these divisors (counting 21581312) is 1, the average is 0.025.
Base conversion 21581312
Base | System | Value |
---|---|---|
2 | Binary | 1010010010100111000000000 |
3 | Ternary | 1111121102222212 |
4 | Quaternary | 1102110320000 |
5 | Quinary | 21011100222 |
6 | Senary | 2050321252 |
8 | Octal | 122247000 |
10 | Decimal | 21581312 |
12 | Duodecimal | 7289228 |
16 | Hexadecimal | 1494e00 |
20 | Vigesimal | 6ehd5c |
36 | Base36 | cuk8w |
Cryptographic Hash Functions
md5 | b57938ffd14957cdcdfc90c8c4d29069 |
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sha1 | d7bf9ab8d0f4dbd5f997c3b398187effb15cc890 |
sha256 | e8052070c450f306333da7fcf62e830013f01c20e9c1229c60cf9ebed31b1102 |
sha512 | eaf63394640f72aab5c0f333cebd8921111d7816c4071951c99af6119fd23f1ea978e84d88f76273042669c753e1938e4794578b0453e3496ae47fed49b0ebe6 |
ripemd-160 | bd6a6b28db6719edfde2e370a5692146073176bf |
21581312 as geometric shapes
Circle
Radius = nDiameter | 43162624 |
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Circumference | 135599382.46806 |
Area | 1.4632062900253E+15 |
Sphere
Radius = nVolume | 4.2103881953863E+22 |
---|---|
Surface area | 5.852825160101E+15 |
Circumference | 135599382.46806 |
Square
Length = nPerimeter | 86325248 |
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Area | 465753027641344 |
Diagonal | 30520584.124205 |
Cube
Length = nSurface area | 2794518165848064 |
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Volume | 1.0051561404472E+22 |
Space diagonal | 37379928.877996 |
Equilateral Triangle
Length = nPerimeter | 64743936 |
---|---|
Area | 2.0167697691346E+14 |
Altitude | 18689964.438998 |
Triangular Pyramid
Length = nSurface area | 2.0167697691346E+14 |
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Volume | 1.1845878717692E+21 |
Height | 10173528.041402 |