20121291 (number)
20121291 is an odd 8-digits composite number following 20121290 and preceding 20121292. In scientific notation, it is written as 2.0121291 × 10^7. The sum of its digits is 18. It has a total of 6 prime factors and 40 positive divisors. There are 12737088 positive integers (up to 20121291) that are relatively prime to 20121291.
Interesting facts
- 20121291 has 40 divisors, whose sum is 31624560
- The reverse of 20121291 is 19212102
- Previous prime number is 53
Basic properties
- Is Prime? no
- Number parity odd
- Number length 8
- Sum of Digits 18
- Digital Root 9
Name
| Name | twenty million one hundred twenty-one thousand two hundred ninety-one |
|---|
Notation
| Scientific notation | 2.0121291 × 10^7 |
|---|---|
| Engineering notation | 2.0121291 × 10^6 |
Prime Factorization of 20121291
Prime Factorization 3 × 3 × 9 × 109 × 53 × 43
Composite number| ω | Distinct Factors | 5 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 6 | Total number of prime factors |
| rad | Radical | 6707097 | Product of the distinct prime numbers |
The prime factorization of 20121291 is 3 × 3 × 9 × 109 × 53 × 43. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20121291)
Multiplication
n×y| n×2 | 40242582 |
|---|---|
| n×3 | 60363873 |
| n×4 | 80485164 |
| n×5 | 100606455 |
Division
n÷y| n÷2 | 10060645.5 |
|---|---|
| n÷3 | 6707097 |
| n÷3 | 5030322.75 |
| n÷5 | 4024258.2 |
Exponentiation
ny| n2 | 404866351506681 |
|---|---|
| n3 | 8.1464336747742E+21 |
| n4 | 1.6391676258233E+29 |
| n5 | 3.298216879697E+36 |
Nth Root
y√n| 2√n | 4485.676203205 |
|---|---|
| 3√n | 271.98938017216 |
| 4√n | 66.975190953106 |
| 5√n | 28.888910831457 |
Divisors of 20121291
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 | -20121290 | 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 20121291 can be divided by 40 positive divisors. The sum of these divisors (counting 20121291) is 1, the average is 0.025.
Base conversion 20121291
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1001100110000011011001011 |
| 3 | Ternary | 1101212021020000 |
| 4 | Quaternary | 1030300123023 |
| 5 | Quinary | 20122340131 |
| 6 | Senary | 1555134043 |
| 8 | Octal | 114603313 |
| 10 | Decimal | 20121291 |
| 12 | Duodecimal | 68a4323 |
| 16 | Hexadecimal | 13306cb |
| 20 | Vigesimal | 65f34b |
| 36 | Base36 | bz9or |
Cryptographic Hash Functions
| md5 | 2822b2c200918963f1b48f8da723d08e |
|---|---|
| sha1 | 5c5505584b469bca04bde0ab43c9cfb92079f418 |
| sha256 | 78e116597867a495267ac4b75699dfbd4dbad4c450ccee96f9ae13cdba955375 |
| sha512 | b5f2cac83c59af9b566dbbdd35ad2fac1dde7a3a198df06af60f2bb46128dd8b57239cebb93d045c3e6cd2db34b151a365086eca471a97147edc10dfe29fcf0b |
| ripemd-160 | 546550c66737c2bdf6ac6ec306310fae548c962a |
20121291 as geometric shapes
Circle
Radius = n| Diameter | 40242582 |
|---|---|
| Circumference | 126425799.97268 |
| Area | 1.2719251555791E+15 |
Sphere
Radius = n| Volume | 3.4123701580836E+22 |
|---|---|
| Surface area | 5.0877006223164E+15 |
| Circumference | 126425799.97268 |
Square
Length = n| Perimeter | 80485164 |
|---|---|
| Area | 404866351506681 |
| Diagonal | 28455802.624656 |
Cube
Length = n| Surface area | 2429198109040086 |
|---|---|
| Volume | 8.1464336747742E+21 |
| Space diagonal | 34851098.325878 |
Equilateral Triangle
Length = n| Perimeter | 60363873 |
|---|---|
| Area | 1.7531227277115E+14 |
| Altitude | 17425549.162939 |
Triangular Pyramid
Length = n| Surface area | 1.7531227277115E+14 |
|---|---|
| Volume | 9.6006641565322E+20 |
| Height | 9485267.5415519 |