1285455920 is an even 10-digits composite number following 1285455919
and preceding 1285455921. In scientific notation, it is written as 1.285455920 × 10^9.
The sum of its digits is 41. It has a total of 8 prime factors and 80 positive divisors.
There are 426504960 positive integers (up to 1285455920) that are relatively prime to 1285455920.
Prime Factorization
2 × 2 × 2 × 2 × 7 × 5 × 31 × 74047
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
8 |
Total number of prime factors |
| rad |
Radical |
160681990 |
Product of the distinct prime numbers |
The prime factorization of 1285455920 is 2 × 2 × 2 × 2 × 7 × 5 × 31 × 74047.
Since it has a total of 8 prime factors.
1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 8680, 17360, 74047, 148094, 296188, 370235, 518329, 592376, 740470, 1036658, 1184752, 1480940, 2073316, 2295457, 2591645, 2961880, 4146632, 4590914, 5183290, 5923760, 8293264, 9181828, 10366580, 11477285, 16068199, 18363656, 20733160, 22954570, 32136398, 36727312, 41466320, 45909140, 64272796, 80340995, 91818280, 128545592, 160681990, 183636560, 257091184, 321363980, 642727960, 1285455920
80 divisors
| τ |
Total Divisors |
80 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-1285455919 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.0125 |
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 |
80 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 1285455920 can be divided by 80 positive divisors.
The sum of these divisors (counting 1285455920) is 1, the average is 0.0125.