28515713804 has 24 divisors (see below), whose sum is σ = 51643010160. Its totient is φ = 13760944064.

The previous prime is 28515713803. The next prime is 28515713851. The reversal of 28515713804 is 40831751582.

It is not an unprimeable number, because it can be changed into a prime (28515713803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266747 + ... + 358029.

It is an arithmetic number, because the mean of its divisors is an integer number (2151792090).

Almost surely, 2^28515713804 is an apocalyptic number.

It is an amenable number.

28515713804 is a deficient number, since it is larger than the sum of its proper divisors (23127296356).

28515713804 is a wasteful number, since it uses less digits than its factorization.

28515713804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94009 (or 94007 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 28515713804 in words is "twenty-eight billion, five hundred fifteen million, seven hundred thirteen thousand, eight hundred four".