21131920 (number)
21131920 is an even 8-digits composite number following 21131919 and preceding 21131921. In scientific notation, it is written as 2.1131920 × 10^7. The sum of its digits is 19. It has a total of 7 prime factors and 40 positive divisors. There are 8254848 positive integers (up to 21131920) that are relatively prime to 21131920.
Interesting facts
- 21131920 has 40 divisors, whose sum is 50282496
- The reverse of 21131920 is 02913112
- Previous prime number is 43
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 19
- Digital Root 1
Name
| Name | twenty-one million one hundred thirty-one thousand nine hundred twenty |
|---|
Notation
| Scientific notation | 2.1131920 × 10^7 |
|---|---|
| Engineering notation | 2.1131920 × 10^6 |
Prime Factorization of 21131920
Prime Factorization 2 × 2 × 2 × 2 × 5 × 43 × 6143
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2641490 | Product of the distinct prime numbers |
The prime factorization of 21131920 is 2 × 2 × 2 × 2 × 5 × 43 × 6143. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21131920)
Multiplication
n×y| n×2 | 42263840 |
|---|---|
| n×3 | 63395760 |
| n×4 | 84527680 |
| n×5 | 105659600 |
Division
n÷y| n÷2 | 10565960 |
|---|---|
| n÷3 | 7043973.3333333 |
| n÷3 | 5282980 |
| n÷5 | 4226384 |
Exponentiation
ny| n2 | 446558042886400 |
|---|---|
| n3 | 9.436628837632E+21 |
| n4 | 1.9941408566653E+29 |
| n5 | 4.2140025051783E+36 |
Nth Root
y√n| 2√n | 4596.9468128313 |
|---|---|
| 3√n | 276.46892210004 |
| 4√n | 67.80078770067 |
| 5√n | 29.173450035673 |
Divisors of 21131920
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 | -21131919 | 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 21131920 can be divided by 40 positive divisors. The sum of these divisors (counting 21131920) is 1, the average is 0.025.
Base conversion 21131920
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1010000100111001010010000 |
| 3 | Ternary | 1110202121112201 |
| 4 | Quaternary | 1100213022100 |
| 5 | Quinary | 20402210140 |
| 6 | Senary | 2032532544 |
| 8 | Octal | 120471220 |
| 10 | Decimal | 21131920 |
| 12 | Duodecimal | 70b1154 |
| 16 | Hexadecimal | 1427290 |
| 20 | Vigesimal | 6c19g0 |
| 36 | Base36 | ckxhs |
Cryptographic Hash Functions
| md5 | d079c76cccdec0fb55fd12868246de42 |
|---|---|
| sha1 | 4af89f37715c12c8f606697f00f0e553300f8828 |
| sha256 | db58b42f9ac97add3830787d9edf4e3193c9934a7f4ee865f646d5f17e9c6fdd |
| sha512 | 629d5ed16755cd6545c2cff44ecf934fa46b9f54c780bcfcc9afbc5e72e9e18b70a9de24673b3e6e87eb3b661640d6bc7d634bbe14256cf8a2aa33b2742209f2 |
| ripemd-160 | dbbc503c4429a0c44289a0b5b7b54eb6b0f7620d |
21131920 as geometric shapes
Circle
Radius = n| Diameter | 42263840 |
|---|---|
| Circumference | 132775769.25649 |
| Area | 1.4029034669334E+15 |
Sphere
Radius = n| Volume | 3.9528058441278E+22 |
|---|---|
| Surface area | 5.6116138677334E+15 |
| Circumference | 132775769.25649 |
Square
Length = n| Perimeter | 84527680 |
|---|---|
| Area | 446558042886400 |
| Diagonal | 29885047.862983 |
Cube
Length = n| Surface area | 2679348257318400 |
|---|---|
| Volume | 9.436628837632E+21 |
| Space diagonal | 36601559.101481 |
Equilateral Triangle
Length = n| Perimeter | 63395760 |
|---|---|
| Area | 1.9336530470194E+14 |
| Altitude | 18300779.55074 |
Triangular Pyramid
Length = n| Surface area | 1.9336530470194E+14 |
|---|---|
| Volume | 1.1121173737717E+21 |
| Height | 9961682.6209944 |