21491860 (number)
21491860 is an even 8-digits composite number following 21491859 and preceding 21491861. In scientific notation, it is written as 2.1491860 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 48 positive divisors. There are 7862400 positive integers (up to 21491860) that are relatively prime to 21491860.
Interesting facts
- 21491860 has 48 divisors, whose sum is 49053312
- The reverse of 21491860 is 06819412
- Previous prime number is 13
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 31
- Digital Root 4
Name
Name | twenty-one million four hundred ninety-one thousand eight hundred sixty |
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Notation
Scientific notation | 2.1491860 × 10^7 |
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Engineering notation | 2.1491860 × 10^6 |
Prime Factorization of 21491860
Prime Factorization 2 × 2 × 131 × 5 × 13 × 631
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 10745930 | Product of the distinct prime numbers |
The prime factorization of 21491860 is 2 × 2 × 131 × 5 × 13 × 631. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21491860)
Multiplication
n×yn×2 | 42983720 |
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n×3 | 64475580 |
n×4 | 85967440 |
n×5 | 107459300 |
Division
n÷yn÷2 | 10745930 |
---|---|
n÷3 | 7163953.3333333 |
n÷3 | 5372965 |
n÷5 | 4298372 |
Exponentiation
nyn2 | 461900046259600 |
---|---|
n3 | 9.9270911282048E+21 |
n4 | 2.1335165273462E+29 |
n5 | 4.5853238513411E+36 |
Nth Root
y√n2√n | 4635.9314058774 |
---|---|
3√n | 278.02979167642 |
4√n | 68.087674404971 |
5√n | 29.272162039547 |
Divisors of 21491860
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21491859 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | 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 | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21491860 can be divided by 48 positive divisors. The sum of these divisors (counting 21491860) is 1, the average is 0.020833333333333.
Base conversion 21491860
Base | System | Value |
---|---|---|
2 | Binary | 1010001111111000010010100 |
3 | Ternary | 1111102220021211 |
4 | Quaternary | 1101333002110 |
5 | Quinary | 21000214420 |
6 | Senary | 2044351204 |
8 | Octal | 121770224 |
10 | Decimal | 21491860 |
12 | Duodecimal | 7245504 |
16 | Hexadecimal | 147f094 |
20 | Vigesimal | 6e69d0 |
36 | Base36 | csn84 |
Cryptographic Hash Functions
md5 | aacb064b9146e5c4a6adf1cc3cbff38e |
---|---|
sha1 | 91dfdd5c803828cda6741d5412fec8e8c9ad5016 |
sha256 | 2e8889a81704f4df9b11b5333b47496a4631d77df64e170ce84d28725200ec66 |
sha512 | d125c5a90d4361301a9e39e93df5b0d22224cb973f5b39b5f142bf6ea7cb125a9988387430e578acff4989bcc2f8e1d2d48d52387cae69c65a75a62f8982ade5 |
ripemd-160 | a2ef0d002f462ef938b0fe81ec613f8fd3d37a81 |
21491860 as geometric shapes
Circle
Radius = nDiameter | 42983720 |
---|---|
Circumference | 135037338.97596 |
Area | 1.4511017920219E+15 |
Sphere
Radius = nVolume | 4.1582502079846E+22 |
---|---|
Surface area | 5.8044071680878E+15 |
Circumference | 135037338.97596 |
Square
Length = nPerimeter | 85967440 |
---|---|
Area | 461900046259600 |
Diagonal | 30394079.892624 |
Cube
Length = nSurface area | 2771400277557600 |
---|---|
Volume | 9.9270911282048E+21 |
Space diagonal | 37224993.469157 |
Equilateral Triangle
Length = nPerimeter | 64475580 |
---|---|
Area | 2.0000858703501E+14 |
Altitude | 18612496.734579 |
Triangular Pyramid
Length = nSurface area | 2.0000858703501E+14 |
---|---|
Volume | 1.1699189090351E+21 |
Height | 10131359.964208 |