2155388972 is an even 10-digits composite number following 2155388971
and preceding 2155388973. In scientific notation, it is written as 2.155388972 × 10^9.
The sum of its digits is 50. It has a total of 7 prime factors and 72 positive divisors.
There are 911623680 positive integers (up to 2155388972) that are relatively prime to 2155388972.
Prime Factorization
2 × 2 × 11 × 11 × 23 × 37 × 5233
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
97972226 |
Product of the distinct prime numbers |
The prime factorization of 2155388972 is 2 × 2 × 11 × 11 × 23 × 37 × 5233.
Since it has a total of 7 prime factors.
1, 2, 4, 11, 22, 23, 37, 44, 46, 74, 92, 121, 148, 242, 253, 407, 484, 506, 814, 851, 1012, 1628, 1702, 2783, 3404, 4477, 5233, 5566, 8954, 9361, 10466, 11132, 17908, 18722, 20932, 37444, 57563, 102971, 115126, 120359, 193621, 205942, 230252, 240718, 387242, 411884, 481436, 633193, 774484, 1266386, 1323949, 2129831, 2532772, 2647898, 4259662, 4453283, 5295796, 8519324, 8906566, 14563439, 17813132, 23428141, 29126878, 46856282, 48986113, 58253756, 93712564, 97972226, 195944452, 538847243, 1077694486, 2155388972
72 divisors
| τ |
Total Divisors |
72 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-2155388971 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.013888888888889 |
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 |
72 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 2155388972 can be divided by 72 positive divisors.
The sum of these divisors (counting 2155388972) is 1, the average is 0.013888888888889.