20155728 (number)
20155728 is an even 8-digits composite number following 20155727 and preceding 20155729. In scientific notation, it is written as 2.0155728 × 10^7. The sum of its digits is 30. It has a total of 7 prime factors and 40 positive divisors. There are 6426112 positive integers (up to 20155728) that are relatively prime to 20155728.
Interesting facts
- 20155728 has 40 divisors, whose sum is 54335808
- The reverse of 20155728 is 82755102
- Previous prime number is 23
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 30
- Digital Root 3
Name
| Name | twenty million one hundred fifty-five thousand seven hundred twenty-eight |
|---|
Notation
| Scientific notation | 2.0155728 × 10^7 |
|---|---|
| Engineering notation | 2.0155728 × 10^6 |
Prime Factorization of 20155728
Prime Factorization 2 × 2 × 2 × 2 × 3 × 23 × 18257
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2519466 | Product of the distinct prime numbers |
The prime factorization of 20155728 is 2 × 2 × 2 × 2 × 3 × 23 × 18257. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20155728)
Multiplication
n×y| n×2 | 40311456 |
|---|---|
| n×3 | 60467184 |
| n×4 | 80622912 |
| n×5 | 100778640 |
Division
n÷y| n÷2 | 10077864 |
|---|---|
| n÷3 | 6718576 |
| n÷3 | 5038932 |
| n÷5 | 4031145.6 |
Exponentiation
ny| n2 | 406253371209984 |
|---|---|
| n3 | 8.1883324491915E+21 |
| n4 | 1.6504180161948E+29 |
| n5 | 3.3265376620721E+36 |
Nth Root
y√n| 2√n | 4489.5131139134 |
|---|---|
| 3√n | 272.14445901981 |
| 4√n | 67.003829098891 |
| 5√n | 28.898792573736 |
Divisors of 20155728
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 | -20155727 | 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 20155728 can be divided by 40 positive divisors. The sum of these divisors (counting 20155728) is 1, the average is 0.025.
Base conversion 20155728
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1001100111000110101010000 |
| 3 | Ternary | 1101221000110110 |
| 4 | Quaternary | 1030320311100 |
| 5 | Quinary | 20124440403 |
| 6 | Senary | 2000001320 |
| 8 | Octal | 114706520 |
| 10 | Decimal | 20155728 |
| 12 | Duodecimal | 6900240 |
| 16 | Hexadecimal | 1338d50 |
| 20 | Vigesimal | 65j968 |
| 36 | Base36 | c009c |
Cryptographic Hash Functions
| md5 | 693dfdb36b39f5c4465ad9c476044f2c |
|---|---|
| sha1 | 1905e62a2a294e28529c672a11a73df1fb8a1a42 |
| sha256 | 0b3149d400908548c2ae89d6f493bd7f94ae4bd6fb083568e2ff7ef90bac9fcc |
| sha512 | 00bb81071a8ad5e2e72674d6103c8586ab2e9a7be9750980213567246b053f68ebf80f41516eab5cc02f64c1dffbe80e5efbc5174e0540e07bc600d1f7015df4 |
| ripemd-160 | 6f541cf30e888d12d2a7fa6c0136f3d61b72e5bf |
20155728 as geometric shapes
Circle
Radius = n| Diameter | 40311456 |
|---|---|
| Circumference | 126642174.02511 |
| Area | 1.2762826064894E+15 |
Sphere
Radius = n| Volume | 3.4299206756708E+22 |
|---|---|
| Surface area | 5.1051304259575E+15 |
| Circumference | 126642174.02511 |
Square
Length = n| Perimeter | 80622912 |
|---|---|
| Area | 406253371209984 |
| Diagonal | 28504503.897103 |
Cube
Length = n| Surface area | 2437520227259904 |
|---|---|
| Volume | 8.1883324491915E+21 |
| Space diagonal | 34910744.959539 |
Equilateral Triangle
Length = n| Perimeter | 60467184 |
|---|---|
| Area | 1.7591286992046E+14 |
| Altitude | 17455372.479769 |
Triangular Pyramid
Length = n| Surface area | 1.7591286992046E+14 |
|---|---|
| Volume | 9.6500423357219E+20 |
| Height | 9501501.2990344 |