21131894 (number)
21131894 is an even 8-digits composite number following 21131893 and preceding 21131895. In scientific notation, it is written as 2.1131894 × 10^7. The sum of its digits is 29. It has a total of 6 prime factors and 64 positive divisors. There are 7983360 positive integers (up to 21131894) that are relatively prime to 21131894.
Interesting facts
- 21131894 has 64 divisors, whose sum is 40919040
- The reverse of 21131894 is 49813112
- Previous prime number is 73
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 29
- Digital Root 2
Name
Name | twenty-one million one hundred thirty-one thousand eight hundred ninety-four |
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Notation
Scientific notation | 2.1131894 × 10^7 |
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Engineering notation | 2.1131894 × 10^6 |
Prime Factorization of 21131894
Prime Factorization 2 × 7 × 23 × 31 × 73 × 29
Composite numberω | Distinct Factors | 6 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 21131894 | Product of the distinct prime numbers |
The prime factorization of 21131894 is 2 × 7 × 23 × 31 × 73 × 29. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21131894)
Multiplication
n×yn×2 | 42263788 |
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n×3 | 63395682 |
n×4 | 84527576 |
n×5 | 105659470 |
Division
n÷yn÷2 | 10565947 |
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n÷3 | 7043964.6666667 |
n÷3 | 5282973.5 |
n÷5 | 4226378.8 |
Exponentiation
nyn2 | 446556944027236 |
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n3 | 9.4365940061475E+21 |
n4 | 1.9941310425894E+29 |
n5 | 4.213976581411E+36 |
Nth Root
y√n2√n | 4596.9439848665 |
---|---|
3√n | 276.46880871399 |
4√n | 67.800766845711 |
5√n | 29.173442856864 |
Divisors of 21131894
64 divisors
τ | Total Divisors | 64 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21131893 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.015625 | 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 | 64 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21131894 can be divided by 64 positive divisors. The sum of these divisors (counting 21131894) is 1, the average is 0.015625.
Base conversion 21131894
Base | System | Value |
---|---|---|
2 | Binary | 1010000100111001001110110 |
3 | Ternary | 1110202121111202 |
4 | Quaternary | 1100213021312 |
5 | Quinary | 20402210034 |
6 | Senary | 2032532502 |
8 | Octal | 120471166 |
10 | Decimal | 21131894 |
12 | Duodecimal | 70b1132 |
16 | Hexadecimal | 1427276 |
20 | Vigesimal | 6c19ee |
36 | Base36 | ckxh2 |
Cryptographic Hash Functions
md5 | 9dc572a1717f8ae2a5bc1c98e2de270a |
---|---|
sha1 | d79829144ebeb3d789877d2d25f6d636f31ea889 |
sha256 | aef1ed13a1e6ac22aa26315e0c467abe398fff81703ba5861820f770997b8314 |
sha512 | 4e24340329264751fcead75a7ae7d219e624da369036c4e67ab7682d016fe9e16cee771c7d8e31a35b63c81b6a98f2ebb795cee1f03b0b25be06dc480efbe50d |
ripemd-160 | ce58f4331d214ff2fad53ec05dc157fe1bb76077 |
21131894 as geometric shapes
Circle
Radius = nDiameter | 42263788 |
---|---|
Circumference | 132775605.89368 |
Area | 1.4029000147655E+15 |
Sphere
Radius = nVolume | 3.9527912539497E+22 |
---|---|
Surface area | 5.6116000590619E+15 |
Circumference | 132775605.89368 |
Square
Length = nPerimeter | 84527576 |
---|---|
Area | 446556944027236 |
Diagonal | 29885011.093431 |
Cube
Length = nSurface area | 2679341664163416 |
---|---|
Volume | 9.4365940061475E+21 |
Space diagonal | 36601514.06816 |
Equilateral Triangle
Length = nPerimeter | 63395682 |
---|---|
Area | 1.9336482888197E+14 |
Altitude | 18300757.03408 |
Triangular Pyramid
Length = nSurface area | 1.9336482888197E+14 |
---|---|
Volume | 1.1121132688419E+21 |
Height | 9961670.3644769 |