205128612 is an even 9-digits composite number following 205128611
and preceding 205128613. In scientific notation, it is written as 2.05128612 × 10^8.
The sum of its digits is 27. It has a total of 7 prime factors and 72 positive divisors.
There are 61041600 positive integers (up to 205128612) that are relatively prime to 205128612.
Prime Factorization
2 × 2 × 13 × 9 × 9 × 31 × 1571
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
11396034 |
Product of the distinct prime numbers |
The prime factorization of 205128612 is 2 × 2 × 13 × 9 × 9 × 31 × 1571.
Since it has a total of 7 prime factors.
1, 2, 4, 9, 13, 18, 26, 31, 36, 52, 62, 81, 117, 124, 162, 234, 279, 324, 403, 468, 558, 806, 1053, 1116, 1571, 1612, 2106, 2511, 3142, 3627, 4212, 5022, 6284, 7254, 10044, 14139, 14508, 20423, 28278, 32643, 40846, 48701, 56556, 65286, 81692, 97402, 127251, 130572, 183807, 194804, 254502, 367614, 438309, 509004, 633113, 735228, 876618, 1266226, 1654263, 1753236, 2532452, 3308526, 3944781, 5698017, 6617052, 7889562, 11396034, 15779124, 22792068, 51282153, 102564306, 205128612
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 |
-205128611 |
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 205128612 can be divided by 72 positive divisors.
The sum of these divisors (counting 205128612) is 1, the average is 0.013888888888889.