21491925 (number)
21491925 is an odd 8-digits composite number following 21491924 and preceding 21491926. In scientific notation, it is written as 2.1491925 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 64 positive divisors. There are 8743680 positive integers (up to 21491925) that are relatively prime to 21491925.
Interesting facts
- 21491925 has 64 divisors, whose sum is 38019072
- The reverse of 21491925 is 52919412
- Previous prime number is 67
Basic properties
- Is Prime? no
- Number parity odd
- Number length 8
- Sum of Digits 33
- Digital Root 6
Name
Name | twenty-one million four hundred ninety-one thousand nine hundred twenty-five |
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Notation
Scientific notation | 2.1491925 × 10^7 |
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Engineering notation | 2.1491925 × 10^6 |
Prime Factorization of 21491925
Prime Factorization 25 × 7 × 3 × 13 × 67 × 47
Composite numberω | Distinct Factors | 6 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 21491925 | Product of the distinct prime numbers |
The prime factorization of 21491925 is 25 × 7 × 3 × 13 × 67 × 47. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21491925)
Multiplication
n×yn×2 | 42983850 |
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n×3 | 64475775 |
n×4 | 85967700 |
n×5 | 107459625 |
Division
n÷yn÷2 | 10745962.5 |
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n÷3 | 7163975 |
n÷3 | 5372981.25 |
n÷5 | 4298385 |
Exponentiation
nyn2 | 461902840205625 |
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n3 | 9.9271811989863E+21 |
n4 | 2.1335423379002E+29 |
n5 | 4.5853931910476E+36 |
Nth Root
y√n2√n | 4635.9384163295 |
---|---|
3√n | 278.03007196732 |
4√n | 68.087725886018 |
5√n | 29.272179745676 |
Divisors of 21491925
64 divisors
τ | Total Divisors | 64 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21491924 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.015625 | 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 | 64 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21491925 can be divided by 64 positive divisors. The sum of these divisors (counting 21491925) is 1, the average is 0.015625.
Base conversion 21491925
Base | System | Value |
---|---|---|
2 | Binary | 1010001111111000011010101 |
3 | Ternary | 1111102220101020 |
4 | Quaternary | 1101333003111 |
5 | Quinary | 21000220200 |
6 | Senary | 2044351353 |
8 | Octal | 121770325 |
10 | Decimal | 21491925 |
12 | Duodecimal | 7245559 |
16 | Hexadecimal | 147f0d5 |
20 | Vigesimal | 6e69g5 |
36 | Base36 | csn9x |
Cryptographic Hash Functions
md5 | 7176696ecff6eb90c6bbdd1134e51678 |
---|---|
sha1 | e805886ad8dca97565c9663c79b83b379c6f5835 |
sha256 | eafdb3943dd0b49255543265d49443c1e13fdab29a82abda847c089c128e6c34 |
sha512 | c56c6d11c76623a7625d0753fafba0d43adafdc11f331827c2d2472bf2acfc7a58f4e305e46aeed6427ccd2afb8d9e7c70bce951029930ca648de609175e41a4 |
ripemd-160 | 2f86d5bb3f313ec6baa87146b5ffe054b1b3f255 |
21491925 as geometric shapes
Circle
Radius = nDiameter | 42983850 |
---|---|
Circumference | 135037747.38301 |
Area | 1.4511105694623E+15 |
Sphere
Radius = nVolume | 4.1582879367453E+22 |
---|---|
Surface area | 5.804442277849E+15 |
Circumference | 135037747.38301 |
Square
Length = nPerimeter | 85967700 |
---|---|
Area | 461902840205625 |
Diagonal | 30394171.816505 |
Cube
Length = nSurface area | 2771417041233750 |
---|---|
Volume | 9.9271811989863E+21 |
Space diagonal | 37225106.05246 |
Equilateral Triangle
Length = nPerimeter | 64475775 |
---|---|
Area | 2.0000979684913E+14 |
Altitude | 18612553.02623 |
Triangular Pyramid
Length = nSurface area | 2.0000979684913E+14 |
---|---|
Volume | 1.1699295239785E+21 |
Height | 10131390.605502 |