20921872 (number)
20921872 is an even 8-digits composite number following 20921871 and preceding 20921873. In scientific notation, it is written as 2.0921872 × 10^7. The sum of its digits is 31. It has a total of 7 prime factors and 40 positive divisors. There are 9988992 positive integers (up to 20921872) that are relatively prime to 20921872.
Interesting facts
- 20921872 has 40 divisors, whose sum is 42408000
- The reverse of 20921872 is 27812902
- Previous prime number is 59
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 31
- Digital Root 4
Name
| Name | twenty million nine hundred twenty-one thousand eight hundred seventy-two |
|---|
Notation
| Scientific notation | 2.0921872 × 10^7 |
|---|---|
| Engineering notation | 2.0921872 × 10^6 |
Prime Factorization of 20921872
Prime Factorization 2 × 2 × 2 × 2 × 37 × 59 × 599
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2615234 | Product of the distinct prime numbers |
The prime factorization of 20921872 is 2 × 2 × 2 × 2 × 37 × 59 × 599. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20921872)
Multiplication
n×y| n×2 | 41843744 |
|---|---|
| n×3 | 62765616 |
| n×4 | 83687488 |
| n×5 | 104609360 |
Division
n÷y| n÷2 | 10460936 |
|---|---|
| n÷3 | 6973957.3333333 |
| n÷3 | 5230468 |
| n÷5 | 4184374.4 |
Exponentiation
ny| n2 | 437724727984384 |
|---|---|
| n3 | 9.1580207301241E+21 |
| n4 | 1.91602937489E+29 |
| n5 | 4.0086921329689E+36 |
Nth Root
y√n| 2√n | 4574.0432879456 |
|---|---|
| 3√n | 275.54985082806 |
| 4√n | 67.631673703566 |
| 5√n | 29.115222150975 |
Divisors of 20921872
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 | -20921871 | 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 20921872 can be divided by 40 positive divisors. The sum of these divisors (counting 20921872) is 1, the average is 0.025.
Base conversion 20921872
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1001111110011111000010000 |
| 3 | Ternary | 1110100221102011 |
| 4 | Quaternary | 1033303320100 |
| 5 | Quinary | 20323444442 |
| 6 | Senary | 2024232304 |
| 8 | Octal | 117637020 |
| 10 | Decimal | 20921872 |
| 12 | Duodecimal | 700b694 |
| 16 | Hexadecimal | 13f3e10 |
| 20 | Vigesimal | 6af4dc |
| 36 | Base36 | cgff4 |
Cryptographic Hash Functions
| md5 | 769c50b78e0ae1afddf7faf6d9e1be7c |
|---|---|
| sha1 | 4ab3aa83c98171b443970eef5a207e4f4846afc3 |
| sha256 | 45dcf01e598410bd39605c53a3b193ffd79953e81c86ddc325fe378c630c2774 |
| sha512 | f2cc28214951bd3b9ca2712384d816a94a646d001f1f74e11f0e06d220ef55df1ea095b2121fda87f211bfa701f221d37443e7a97d23185f2505330b592dbc1e |
| ripemd-160 | 3f1487ef4a3a42ad64106c5155010bc29cfccbcf |
20921872 as geometric shapes
Circle
Radius = n| Diameter | 41843744 |
|---|---|
| Circumference | 131455998.74909 |
| Area | 1.3751527897303E+15 |
Sphere
Radius = n| Volume | 3.8361027529575E+22 |
|---|---|
| Surface area | 5.5006111589213E+15 |
| Circumference | 131455998.74909 |
Square
Length = n| Perimeter | 83687488 |
|---|---|
| Area | 437724727984384 |
| Diagonal | 29587995.132634 |
Cube
Length = n| Surface area | 2626348367906304 |
|---|---|
| Volume | 9.1580207301241E+21 |
| Space diagonal | 36237745.293453 |
Equilateral Triangle
Length = n| Perimeter | 62765616 |
|---|---|
| Area | 1.8954036714955E+14 |
| Altitude | 18118872.646726 |
Triangular Pyramid
Length = n| Surface area | 1.8954036714955E+14 |
|---|---|
| Volume | 1.0792830934196E+21 |
| Height | 9862665.0442113 |