638879904 is an even 9-digits composite number following 638879903
and preceding 638879905. In scientific notation, it is written as 6.38879904 × 10^8.
The sum of its digits is 54. It has a total of 9 prime factors and 72 positive divisors.
There are 196577280 positive integers (up to 638879904) that are relatively prime to 638879904.
Prime Factorization
2 × 2 × 2 × 2 × 2 × 3 × 13 × 3 × 170641
Composite number
| ω |
Distinct Factors |
4 |
Total number of distinct prime factors |
| Ω |
Total Factors |
9 |
Total number of prime factors |
| rad |
Radical |
13309998 |
Product of the distinct prime numbers |
The prime factorization of 638879904 is 2 × 2 × 2 × 2 × 2 × 3 × 13 × 3 × 170641.
Since it has a total of 9 prime factors.
1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 170641, 341282, 511923, 682564, 1023846, 1365128, 1535769, 2047692, 2218333, 2730256, 3071538, 4095384, 4436666, 5460512, 6143076, 6654999, 8190768, 8873332, 12286152, 13309998, 16381536, 17746664, 19964997, 24572304, 26619996, 35493328, 39929994, 49144608, 53239992, 70986656, 79859988, 106479984, 159719976, 212959968, 319439952, 638879904
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 |
-638879903 |
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 638879904 can be divided by 72 positive divisors.
The sum of these divisors (counting 638879904) is 1, the average is 0.013888888888889.