20781264 (number)
20781264 is an even 8-digits composite number following 20781263 and preceding 20781265. In scientific notation, it is written as 2.0781264 × 10^7. The sum of its digits is 30. It has a total of 7 prime factors and 40 positive divisors. There are 5878656 positive integers (up to 20781264) that are relatively prime to 20781264.
Interesting facts
- 20781264 has 40 divisors, whose sum is 42600448
- The reverse of 20781264 is 46218702
- Previous prime number is 127
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 30
- Digital Root 3
Name
| Name | twenty million seven hundred eighty-one thousand two hundred sixty-four |
|---|
Notation
| Scientific notation | 2.0781264 × 10^7 |
|---|---|
| Engineering notation | 2.0781264 × 10^6 |
Prime Factorization of 20781264
Prime Factorization 2 × 2 × 2 × 2 × 21 × 127 × 487
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2597658 | Product of the distinct prime numbers |
The prime factorization of 20781264 is 2 × 2 × 2 × 2 × 21 × 127 × 487. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20781264)
Multiplication
n×y| n×2 | 41562528 |
|---|---|
| n×3 | 62343792 |
| n×4 | 83125056 |
| n×5 | 103906320 |
Division
n÷y| n÷2 | 10390632 |
|---|---|
| n÷3 | 6927088 |
| n÷3 | 5195316 |
| n÷5 | 4156252.8 |
Exponentiation
ny| n2 | 431860933437696 |
|---|---|
| n3 | 8.9746160690552E+21 |
| n4 | 1.8650386582968E+29 |
| n5 | 3.8757860728271E+36 |
Nth Root
y√n| 2√n | 4558.6471677462 |
|---|---|
| 3√n | 274.93117396047 |
| 4√n | 67.51775446315 |
| 5√n | 29.075982039135 |
Divisors of 20781264
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 | -20781263 | 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 20781264 can be divided by 40 positive divisors. The sum of these divisors (counting 20781264) is 1, the average is 0.025.
Base conversion 20781264
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1001111010001100011010000 |
| 3 | Ternary | 1110002210112110 |
| 4 | Quaternary | 1033101203100 |
| 5 | Quinary | 20310000024 |
| 6 | Senary | 2021225320 |
| 8 | Octal | 117214320 |
| 10 | Decimal | 20781264 |
| 12 | Duodecimal | 6b62240 |
| 16 | Hexadecimal | 13d18d0 |
| 20 | Vigesimal | 69hd34 |
| 36 | Base36 | cdexc |
Cryptographic Hash Functions
| md5 | ded4735de80f1397306a5866e4b55cef |
|---|---|
| sha1 | cca447c14512e735356e4df7faa906e642b47139 |
| sha256 | 41bf70c40cddb31ee466885544d30e1b92f210b49646a3fad85c2b9b8f4f3909 |
| sha512 | 41d93a9f1286c4f2d1f1e7b118e868aacf15de08dcd83906abefc027543e16afc78bdc0e715ee5b2cd6d34215e14876dd9ff0e45475056e7a670d29654abbfa0 |
| ripemd-160 | d687802580b5a3f2abafcf0f068cadb54f9b6897 |
20781264 as geometric shapes
Circle
Radius = n| Diameter | 41562528 |
|---|---|
| Circumference | 130572532.62942 |
| Area | 1.3567311358603E+15 |
Sphere
Radius = n| Volume | 3.7592783881777E+22 |
|---|---|
| Surface area | 5.4269245434412E+15 |
| Circumference | 130572532.62942 |
Square
Length = n| Perimeter | 83125056 |
|---|---|
| Area | 431860933437696 |
| Diagonal | 29389145.392056 |
Cube
Length = n| Surface area | 2591165600626176 |
|---|---|
| Volume | 8.9746160690552E+21 |
| Space diagonal | 35994205.093502 |
Equilateral Triangle
Length = n| Perimeter | 62343792 |
|---|---|
| Area | 1.8700126962955E+14 |
| Altitude | 17997102.546751 |
Triangular Pyramid
Length = n| Surface area | 1.8700126962955E+14 |
|---|---|
| Volume | 1.0576686468291E+21 |
| Height | 9796381.7973519 |