21521640 (number)
21521640 is an even 8-digits composite number following 21521639 and preceding 21521641. In scientific notation, it is written as 2.1521640 × 10^7. The sum of its digits is 21. It has a total of 7 prime factors and 64 positive divisors. There are 4919040 positive integers (up to 21521640) that are relatively prime to 21521640.
Interesting facts
- 21521640 has 64 divisors, whose sum is 73791360
- The reverse of 21521640 is 04612512
- Previous prime number is 5
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 21
- Digital Root 3
Name
Name | twenty-one million five hundred twenty-one thousand six hundred forty |
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Notation
Scientific notation | 2.1521640 × 10^7 |
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Engineering notation | 2.1521640 × 10^6 |
Prime Factorization of 21521640
Prime Factorization 2 × 2 × 2 × 7 × 3 × 5 × 25621
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 5380410 | Product of the distinct prime numbers |
The prime factorization of 21521640 is 2 × 2 × 2 × 7 × 3 × 5 × 25621. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21521640)
Multiplication
n×yn×2 | 43043280 |
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n×3 | 64564920 |
n×4 | 86086560 |
n×5 | 107608200 |
Division
n÷yn÷2 | 10760820 |
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n÷3 | 7173880 |
n÷3 | 5380410 |
n÷5 | 4304328 |
Exponentiation
nyn2 | 463180988289600 |
---|---|
n3 | 9.968414484813E+21 |
n4 | 2.1453662791293E+29 |
n5 | 4.617180072756E+36 |
Nth Root
y√n2√n | 4639.1421620813 |
---|---|
3√n | 278.15814889158 |
4√n | 68.111248425508 |
5√n | 29.280269688003 |
Divisors of 21521640
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 | -21521639 | 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 21521640 can be divided by 64 positive divisors. The sum of these divisors (counting 21521640) is 1, the average is 0.015625.
Base conversion 21521640
Base | System | Value |
---|---|---|
2 | Binary | 1010010000110010011101000 |
3 | Ternary | 1111111102010210 |
4 | Quaternary | 1102012103220 |
5 | Quinary | 21002143030 |
6 | Senary | 2045141120 |
8 | Octal | 122062350 |
10 | Decimal | 21521640 |
12 | Duodecimal | 725a7a0 |
16 | Hexadecimal | 14864e8 |
20 | Vigesimal | 6ea420 |
36 | Base36 | cta7c |
Cryptographic Hash Functions
md5 | 645ef9df6dfa6ac3a2536e89d8498a9c |
---|---|
sha1 | cce31c310287cfa866e968c3be112ed42b051a01 |
sha256 | 6dc54502d7ced72b607cc0daf73e4f9cc94f74ce5c59b5fbbebf634e761471a7 |
sha512 | b78a159af5e25dd66a8d4dcbf66fcb8e3583accbf649bbfbac09aa75a5da325270b0af453214f33d78dbfa805def1df559705b060aa1129792a273044ecbbbdd |
ripemd-160 | 686ee95ae73ed1ee2f4cbe21f217a18e96a2b383 |
21521640 as geometric shapes
Circle
Radius = nDiameter | 43043280 |
---|---|
Circumference | 135224452.23441 |
Area | 1.4551259900931E+15 |
Sphere
Radius = nVolume | 4.1755596951235E+22 |
---|---|
Surface area | 5.8205039603723E+15 |
Circumference | 135224452.23441 |
Square
Length = nPerimeter | 86086560 |
---|---|
Area | 463180988289600 |
Diagonal | 30436195.172511 |
Cube
Length = nSurface area | 2779085929737600 |
---|---|
Volume | 9.968414484813E+21 |
Space diagonal | 37276573.942207 |
Equilateral Triangle
Length = nPerimeter | 64564920 |
---|---|
Area | 2.0056325120439E+14 |
Altitude | 18638286.971103 |
Triangular Pyramid
Length = nSurface area | 2.0056325120439E+14 |
---|---|
Volume | 1.1747889133149E+21 |
Height | 10145398.390837 |