8913578520 has 256 divisors, whose sum is σ = 33467489280. Its totient is φ = 1845043200.

The previous prime is 8913578519. The next prime is 8913578537. The reversal of 8913578520 is 258753198.

It is a self number, because there is not a number n which added to its sum of digits gives 8913578520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2594724 + ... + 2598156.

It is an arithmetic number, because the mean of its divisors is an integer number (130732380).

Almost surely, 2^8913578520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8913578520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16733744640).

8913578520 is an abundant number, since it is smaller than the sum of its proper divisors (24553910760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8913578520 is a wasteful number, since it uses less digits than its factorization.

8913578520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746 (or 3742 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 8913578520 is about 94411.7499043419. The cubic root of 8913578520 is about 2073.4044749274.

The spelling of 8913578520 in words is "eight billion, nine hundred thirteen million, five hundred seventy-eight thousand, five hundred twenty".