21497840 (number)
21497840 is an even 8-digits composite number following 21497839 and preceding 21497841. In scientific notation, it is written as 2.1497840 × 10^7. The sum of its digits is 35. It has a total of 7 prime factors and 40 positive divisors. There are 6801408 positive integers (up to 21497840) that are relatively prime to 21497840.
Interesting facts
- 21497840 has 40 divisors, whose sum is 48351072
- The reverse of 21497840 is 04879412
- Previous prime number is 65
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 35
- Digital Root 8
Name
| Name | twenty-one million four hundred ninety-seven thousand eight hundred forty |
|---|
Notation
| Scientific notation | 2.1497840 × 10^7 |
|---|---|
| Engineering notation | 2.1497840 × 10^6 |
Prime Factorization of 21497840
Prime Factorization 2 × 2 × 2 × 2 × 7 × 65 × 2953
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2687230 | Product of the distinct prime numbers |
The prime factorization of 21497840 is 2 × 2 × 2 × 2 × 7 × 65 × 2953. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21497840)
Multiplication
n×y| n×2 | 42995680 |
|---|---|
| n×3 | 64493520 |
| n×4 | 85991360 |
| n×5 | 107489200 |
Division
n÷y| n÷2 | 10748920 |
|---|---|
| n÷3 | 7165946.6666667 |
| n÷3 | 5374460 |
| n÷5 | 4299568 |
Exponentiation
ny| n2 | 462157124665600 |
|---|---|
| n3 | 9.9353799209211E+21 |
| n4 | 2.1358920787917E+29 |
| n5 | 4.5917066167132E+36 |
Nth Root
y√n| 2√n | 4636.5763231074 |
|---|---|
| 3√n | 278.05557607376 |
| 4√n | 68.092410172554 |
| 5√n | 29.273790824117 |
Divisors of 21497840
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 | -21497839 | 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 21497840 can be divided by 40 positive divisors. The sum of these divisors (counting 21497840) is 1, the average is 0.025.
Base conversion 21497840
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1010010000000011111110000 |
| 3 | Ternary | 1111110012111022 |
| 4 | Quaternary | 1102000133300 |
| 5 | Quinary | 21000412330 |
| 6 | Senary | 2044435012 |
| 8 | Octal | 122003760 |
| 10 | Decimal | 21497840 |
| 12 | Duodecimal | 7248a68 |
| 16 | Hexadecimal | 14807f0 |
| 20 | Vigesimal | 6e74c0 |
| 36 | Base36 | csru8 |
Cryptographic Hash Functions
| md5 | 59235ce4f61d0e2abab014a1426b371f |
|---|---|
| sha1 | 0b3f713a979c66f16e2ffae8da59593f8429c3f5 |
| sha256 | 2201e19265de0e13882a3962e8486e0faf0a32cc4a9d58022aa1bbaf2d4f6801 |
| sha512 | c6b00c79ccd54d6a1d617b8f6f054b0c7ed86c3c3f9ad76f8034463beca9bdcea31492649555335810505b03d508cc11a4b01fbfb237d5f04a56f882cdcb2bb8 |
| ripemd-160 | 108b9ed3f1cd436f2c1a6d821cb4d624653ccc52 |
21497840 as geometric shapes
Circle
Radius = n| Diameter | 42995680 |
|---|---|
| Circumference | 135074912.4241 |
| Area | 1.4519094276536E+15 |
Sphere
Radius = n| Volume | 4.1617222093586E+22 |
|---|---|
| Surface area | 5.8076377106145E+15 |
| Circumference | 135074912.4241 |
Square
Length = n| Perimeter | 85991360 |
|---|---|
| Area | 462157124665600 |
| Diagonal | 30402536.889727 |
Cube
Length = n| Surface area | 2772942747993600 |
|---|---|
| Volume | 9.9353799209211E+21 |
| Space diagonal | 37235351.132987 |
Equilateral Triangle
Length = n| Perimeter | 64493520 |
|---|---|
| Area | 2.0011990525019E+14 |
| Altitude | 18617675.566493 |
Triangular Pyramid
Length = n| Surface area | 2.0011990525019E+14 |
|---|---|
| Volume | 1.1708957526247E+21 |
| Height | 10134178.963242 |