21279940 (number)
21279940 is an even 8-digits composite number following 21279939 and preceding 21279941. In scientific notation, it is written as 2.1279940 × 10^7. The sum of its digits is 34. It has a total of 6 prime factors and 48 positive divisors. There are 7683200 positive integers (up to 21279940) that are relatively prime to 21279940.
Interesting facts
- 21279940 has 48 divisors, whose sum is 49097664
- The reverse of 21279940 is 04997212
- Previous prime number is 197
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 34
- Digital Root 7
Name
Name | twenty-one million two hundred seventy-nine thousand nine hundred forty |
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Notation
Scientific notation | 2.1279940 × 10^7 |
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Engineering notation | 2.1279940 × 10^6 |
Prime Factorization of 21279940
Prime Factorization 2 × 2 × 11 × 5 × 197 × 491
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 10639970 | Product of the distinct prime numbers |
The prime factorization of 21279940 is 2 × 2 × 11 × 5 × 197 × 491. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21279940)
Multiplication
n×yn×2 | 42559880 |
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n×3 | 63839820 |
n×4 | 85119760 |
n×5 | 106399700 |
Division
n÷yn÷2 | 10639970 |
---|---|
n÷3 | 7093313.3333333 |
n÷3 | 5319985 |
n÷5 | 4255988 |
Exponentiation
nyn2 | 452835846403600 |
---|---|
n3 | 9.6363196413178E+21 |
n4 | 2.0506030378806E+29 |
n5 | 4.3636709609918E+36 |
Nth Root
y√n2√n | 4613.018534539 |
---|---|
3√n | 277.11293600219 |
4√n | 67.919205932777 |
5√n | 29.214205496333 |
Divisors of 21279940
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 | -21279939 | 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 21279940 can be divided by 48 positive divisors. The sum of these divisors (counting 21279940) is 1, the average is 0.020833333333333.
Base conversion 21279940
Base | System | Value |
---|---|---|
2 | Binary | 1010001001011010011000100 |
3 | Ternary | 1111001010120221 |
4 | Quaternary | 1101023103010 |
5 | Quinary | 20421424230 |
6 | Senary | 2040034124 |
8 | Octal | 121132304 |
10 | Decimal | 21279940 |
12 | Duodecimal | 7162944 |
16 | Hexadecimal | 144b4c4 |
20 | Vigesimal | 6cjjh0 |
36 | Base36 | co3pg |
Cryptographic Hash Functions
md5 | 93c1d5ac2900e7a63656f60e230a1906 |
---|---|
sha1 | 513db5a7edaaeb50fba06422e784cff0373b101b |
sha256 | 633cc0fed934805f3acce30ed8c0dc32d867863637c8c1847a227e47469c16b6 |
sha512 | a0778f270752f510dca9e9ef04247a7b3708dcf1d29541aa838637f53618bef18b72ce685ea0add420cf7af79d99286df10fc0f3c89b159281acc493e5edbbe8 |
ripemd-160 | 4083ed046027f3058001bf66d725505b5e3bd979 |
21279940 as geometric shapes
Circle
Radius = nDiameter | 42559880 |
---|---|
Circumference | 133705806.34566 |
Area | 1.4226257683437E+15 |
Sphere
Radius = nVolume | 4.0364521323743E+22 |
---|---|
Surface area | 5.6905030733747E+15 |
Circumference | 133705806.34566 |
Square
Length = nPerimeter | 85119760 |
---|---|
Area | 452835846403600 |
Diagonal | 30094379.754486 |
Cube
Length = nSurface area | 2717015078421600 |
---|---|
Volume | 9.6363196413178E+21 |
Space diagonal | 36857937.262017 |
Equilateral Triangle
Length = nPerimeter | 63839820 |
---|---|
Area | 1.9608367336487E+14 |
Altitude | 18428968.631009 |
Triangular Pyramid
Length = nSurface area | 1.9608367336487E+14 |
---|---|
Volume | 1.1356511606762E+21 |
Height | 10031459.918162 |