21031920 (number)
21031920 is an even 8-digits composite number following 21031919 and preceding 21031921. In scientific notation, it is written as 2.1031920 × 10^7. The sum of its digits is 18. It has a total of 8 prime factors and 80 positive divisors. There are 4396032 positive integers (up to 21031920) that are relatively prime to 21031920.
Interesting facts
- 21031920 has 80 divisors, whose sum is 56567808
- The reverse of 21031920 is 02913012
- Previous prime number is 7
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 18
- Digital Root 9
Name
| Name | twenty-one million thirty-one thousand nine hundred twenty |
|---|
Notation
| Scientific notation | 2.1031920 × 10^7 |
|---|---|
| Engineering notation | 2.1031920 × 10^6 |
Prime Factorization of 21031920
Prime Factorization 2 × 2 × 2 × 2 × 351 × 5 × 7 × 107
Composite number| ω | Distinct Factors | 5 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 8 | Total number of prime factors |
| rad | Radical | 2628990 | Product of the distinct prime numbers |
The prime factorization of 21031920 is 2 × 2 × 2 × 2 × 351 × 5 × 7 × 107. Since it has a total of 8 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21031920)
Multiplication
n×y| n×2 | 42063840 |
|---|---|
| n×3 | 63095760 |
| n×4 | 84127680 |
| n×5 | 105159600 |
Division
n÷y| n÷2 | 10515960 |
|---|---|
| n÷3 | 7010640 |
| n÷3 | 5257980 |
| n÷5 | 4206384 |
Exponentiation
ny| n2 | 442341658886400 |
|---|---|
| n3 | 9.3032943823661E+21 |
| n4 | 1.9566614318637E+29 |
| n5 | 4.1152346702043E+36 |
Nth Root
y√n| 2√n | 4586.057130041 |
|---|---|
| 3√n | 276.03213236481 |
| 4√n | 67.720433622659 |
| 5√n | 29.145786833344 |
Divisors of 21031920
80 divisors
| τ | Total Divisors | 80 | Total number of the positive divisors of n |
|---|---|---|---|
| σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
| s | Aliquot Sum | -21031919 | Sum of the proper positive divisors of n |
| A | Arithmetic Mean | 0.0125 | 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 | 80 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21031920 can be divided by 80 positive divisors. The sum of these divisors (counting 21031920) is 1, the average is 0.0125.
Base conversion 21031920
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1010000001110101111110000 |
| 3 | Ternary | 1110120112101000 |
| 4 | Quaternary | 1100032233300 |
| 5 | Quinary | 20341010140 |
| 6 | Senary | 2030442000 |
| 8 | Octal | 120165760 |
| 10 | Decimal | 21031920 |
| 12 | Duodecimal | 7063300 |
| 16 | Hexadecimal | 140ebf0 |
| 20 | Vigesimal | 6b8jg0 |
| 36 | Base36 | cisc0 |
Cryptographic Hash Functions
| md5 | 9092f450de2264d158105fcfc40bf715 |
|---|---|
| sha1 | 5adbfbd5b9774d8b67880ba83ca87acbcc8c7b06 |
| sha256 | 52af0c0eeb79b950c23fd46fbd580b3962821519b3b0b2882adb7edbd3f54691 |
| sha512 | 7908f1c5f1186a0a03f65ca62cc150fac32d44eaa2a88be52b1c552b2d1ace60156bf970cb0a14c092455e39aa785a30a829864b7bc7341688e37a8f1e59cc63 |
| ripemd-160 | 62b8e3662a88c8be958d4d1ac5c10f42e34a07ca |
21031920 as geometric shapes
Circle
Radius = n| Diameter | 42063840 |
|---|---|
| Circumference | 132147450.72578 |
| Area | 1.3896573059342E+15 |
Sphere
Radius = n| Volume | 3.8969548381099E+22 |
|---|---|
| Surface area | 5.5586292237369E+15 |
| Circumference | 132147450.72578 |
Square
Length = n| Perimeter | 84127680 |
|---|---|
| Area | 442341658886400 |
| Diagonal | 29743626.506746 |
Cube
Length = n| Surface area | 2654049953318400 |
|---|---|
| Volume | 9.3032943823661E+21 |
| Space diagonal | 36428354.020724 |
Equilateral Triangle
Length = n| Perimeter | 63095760 |
|---|---|
| Area | 1.9153955687389E+14 |
| Altitude | 18214177.010362 |
Triangular Pyramid
Length = n| Surface area | 1.9153955687389E+14 |
|---|---|
| Volume | 1.0964037575243E+21 |
| Height | 9914542.1689153 |