21491680 (number)
21491680 is an even 8-digits composite number following 21491679 and preceding 21491681. In scientific notation, it is written as 2.1491680 × 10^7. The sum of its digits is 31. It has a total of 8 prime factors and 48 positive divisors. There are 7119360 positive integers (up to 21491680) that are relatively prime to 21491680.
Interesting facts
- 21491680 has 48 divisors, whose sum is 44997120
- The reverse of 21491680 is 08619412
- Previous prime number is 31
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 six hundred eighty |
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Notation
Scientific notation | 2.1491680 × 10^7 |
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Engineering notation | 2.1491680 × 10^6 |
Prime Factorization of 21491680
Prime Factorization 2 × 2 × 2 × 2 × 2 × 35 × 31 × 619
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 8 | Total number of prime factors |
rad | Radical | 1343230 | Product of the distinct prime numbers |
The prime factorization of 21491680 is 2 × 2 × 2 × 2 × 2 × 35 × 31 × 619. Since it has a total of 8 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21491680)
Multiplication
n×yn×2 | 42983360 |
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n×3 | 64475040 |
n×4 | 85966720 |
n×5 | 107458400 |
Division
n÷yn÷2 | 10745840 |
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n÷3 | 7163893.3333333 |
n÷3 | 5372920 |
n÷5 | 4298336 |
Exponentiation
nyn2 | 461892309222400 |
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n3 | 9.9268417042689E+21 |
n4 | 2.133445053188E+29 |
n5 | 4.58513183807E+36 |
Nth Root
y√n2√n | 4635.9119922621 |
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3√n | 278.02901548329 |
4√n | 68.087531841462 |
5√n | 29.272113006966 |
Divisors of 21491680
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 | -21491679 | 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 21491680 can be divided by 48 positive divisors. The sum of these divisors (counting 21491680) is 1, the average is 0.020833333333333.
Base conversion 21491680
Base | System | Value |
---|---|---|
2 | Binary | 1010001111110111111100000 |
3 | Ternary | 1111102220001011 |
4 | Quaternary | 1101332333200 |
5 | Quinary | 21000213210 |
6 | Senary | 2044350304 |
8 | Octal | 121767740 |
10 | Decimal | 21491680 |
12 | Duodecimal | 7245394 |
16 | Hexadecimal | 147efe0 |
20 | Vigesimal | 6e6940 |
36 | Base36 | csn34 |
Cryptographic Hash Functions
md5 | 5133d1dd6d5191b596e5ad2cb7127e7b |
---|---|
sha1 | 8422525410d7b8d6ff3886ed7d0d83d6a1435ce2 |
sha256 | 25ab7b43caf769739b91061ba882a1eaafa6208d8cb88bbf9512e6f658ed2633 |
sha512 | d2762a5ce2719daef431532af85fe993735278cdbd71eee6e1c8d24a44a14ebc445c131af7e44de5130346baeb29abb6e4329163ee591e25a00b700a3635a7f1 |
ripemd-160 | 91a4751db1ed6cb6febec858e83b06c89e840a8e |
21491680 as geometric shapes
Circle
Radius = nDiameter | 42983360 |
---|---|
Circumference | 135036208.00261 |
Area | 1.4510774854027E+15 |
Sphere
Radius = nVolume | 4.1581457295306E+22 |
---|---|
Surface area | 5.8043099416109E+15 |
Circumference | 135036208.00261 |
Square
Length = nPerimeter | 85966720 |
---|---|
Area | 461892309222400 |
Diagonal | 30393825.334183 |
Cube
Length = nSurface area | 2771353855334400 |
---|---|
Volume | 9.9268417042689E+21 |
Space diagonal | 37224681.700012 |
Equilateral Triangle
Length = nPerimeter | 64475040 |
---|---|
Area | 2.0000523679963E+14 |
Altitude | 18612340.850006 |
Triangular Pyramid
Length = nSurface area | 2.0000523679963E+14 |
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Volume | 1.1698895141423E+21 |
Height | 10131275.111394 |