8513375728 has 80 divisors (see below), whose sum is σ = 19436006016. Its totient is φ = 3561419520.

The previous prime is 8513375707. The next prime is 8513375797. The reversal of 8513375728 is 8275733158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788575 + ... + 799297.

Almost surely, 2^8513375728 is an apocalyptic number.

8513375728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8513375728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9718003008).

8513375728 is an abundant number, since it is smaller than the sum of its proper divisors (10922630288).

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

8513375728 is a wasteful number, since it uses less digits than its factorization.

8513375728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102 (or 11096 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 8513375728 is about 92267.9561277912. The cubic root of 8513375728 is about 2041.8974822570.

The spelling of 8513375728 in words is "eight billion, five hundred thirteen million, three hundred seventy-five thousand, seven hundred twenty-eight".