21809538 (number)
21809538 is an even 8-digits composite number following 21809537 and preceding 21809539. In scientific notation, it is written as 2.1809538 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 48 positive divisors. There are 6791040 positive integers (up to 21809538) that are relatively prime to 21809538.
Interesting facts
- 21809538 has 48 divisors, whose sum is 50409216
- The reverse of 21809538 is 83590812
- Previous prime number is 263
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | twenty-one million eight hundred nine thousand five hundred thirty-eight |
---|
Notation
Scientific notation | 2.1809538 × 10^7 |
---|---|
Engineering notation | 2.1809538 × 10^6 |
Prime Factorization of 21809538
Prime Factorization 2 × 3 × 3 × 17 × 263 × 271
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 7269846 | Product of the distinct prime numbers |
The prime factorization of 21809538 is 2 × 3 × 3 × 17 × 263 × 271. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21809538)
Multiplication
n×yn×2 | 43619076 |
---|---|
n×3 | 65428614 |
n×4 | 87238152 |
n×5 | 109047690 |
Division
n÷yn÷2 | 10904769 |
---|---|
n÷3 | 7269846 |
n÷3 | 5452384.5 |
n÷5 | 4361907.6 |
Exponentiation
nyn2 | 475655947773444 |
---|---|
n3 | 1.0373836467891E+22 |
n4 | 2.2624858065225E+29 |
n5 | 4.9343770171814E+36 |
Nth Root
y√n2√n | 4670.0683078516 |
---|---|
3√n | 279.39297918915 |
4√n | 68.33789803507 |
5√n | 29.358191105552 |
Divisors of 21809538
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 | -21809537 | 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 21809538 can be divided by 48 positive divisors. The sum of these divisors (counting 21809538) is 1, the average is 0.020833333333333.
Base conversion 21809538
Base | System | Value |
---|---|---|
2 | Binary | 1010011001100100110000010 |
3 | Ternary | 1112001001001200 |
4 | Quaternary | 1103030212002 |
5 | Quinary | 21040401123 |
6 | Senary | 2055242030 |
8 | Octal | 123144602 |
10 | Decimal | 21809538 |
12 | Duodecimal | 7379316 |
16 | Hexadecimal | 14cc982 |
20 | Vigesimal | 6g63gi |
36 | Base36 | czgci |
Cryptographic Hash Functions
md5 | 3bac863b4c8da1f1166902bd35ad6997 |
---|---|
sha1 | c77dcd6868ce578e4f3a3baa6fa129e05f47dea9 |
sha256 | 9893b8259ab71b5a251884d74069efd4c257818d2526c6959ae340c7bc38aa2f |
sha512 | 713739c7520f064b940574d3d003c2dd7a7cb77d7612fc33c6185b040b91728c7e90b67c5dbbc128fb9d1d513d75dc48cf3642f0eb979161d86964fbf989b45e |
ripemd-160 | 3c04cfcfa1dd04db5fceb0396eec14cbdbbdbb78 |
21809538 as geometric shapes
Circle
Radius = nDiameter | 43619076 |
---|---|
Circumference | 137033368.71797 |
Area | 1.4943172311613E+15 |
Sphere
Radius = nVolume | 4.3453824582757E+22 |
---|---|
Surface area | 5.9772689246454E+15 |
Circumference | 137033368.71797 |
Square
Length = nPerimeter | 87238152 |
---|---|
Area | 475655947773444 |
Diagonal | 30843344.428691 |
Cube
Length = nSurface area | 2853935686640664 |
---|---|
Volume | 1.0373836467891E+22 |
Space diagonal | 37775227.905604 |
Equilateral Triangle
Length = nPerimeter | 65428614 |
---|---|
Area | 2.0596506711648E+14 |
Altitude | 18887613.952802 |
Triangular Pyramid
Length = nSurface area | 2.0596506711648E+14 |
---|---|
Volume | 1.2225683522277E+21 |
Height | 10281114.809564 |