638530816 is an even 9-digits composite number following 638530815
and preceding 638530817. In scientific notation, it is written as 6.38530816 × 10^8.
The sum of its digits is 40. It has a total of 11 prime factors and 72 positive divisors.
There are 239984640 positive integers (up to 638530816) that are relatively prime to 638530816.
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 319 × 1117
Composite number
| ω |
Distinct Factors |
4 |
Total number of distinct prime factors |
| Ω |
Total Factors |
11 |
Total number of prime factors |
| rad |
Radical |
4988522 |
Product of the distinct prime numbers |
The prime factorization of 638530816 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 319 × 1117.
Since it has a total of 11 prime factors.
1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 319, 448, 638, 896, 1117, 1276, 1792, 2233, 2234, 2552, 4466, 4468, 5104, 7819, 8932, 8936, 10208, 15638, 17864, 17872, 20416, 31276, 35728, 35744, 40832, 62552, 71456, 71488, 81664, 125104, 142912, 142976, 250208, 285824, 285952, 356323, 500416, 571648, 712646, 1000832, 1425292, 2001664, 2494261, 2850584, 4988522, 5701168, 9977044, 11402336, 19954088, 22804672, 39908176, 45609344, 79816352, 91218688, 159632704, 319265408, 638530816
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 |
-638530815 |
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 638530816 can be divided by 72 positive divisors.
The sum of these divisors (counting 638530816) is 1, the average is 0.013888888888889.