28751988600 has 72 divisors (see below), whose sum is σ = 96558767760. Its totient is φ = 7667196480.

The previous prime is 28751988589. The next prime is 28751988613. The reversal of 28751988600 is 688915782.

28751988600 is a `hidden beast` number, since 28 + 7 + 5 + 1 + 9 + 8 + 8 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7984864 + ... + 7988463.

Almost surely, 2^28751988600 is an apocalyptic number.

28751988600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28751988600 is an abundant number, since it is smaller than the sum of its proper divisors (67806779160).

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

28751988600 is a wasteful number, since it uses less digits than its factorization.

28751988600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15973349 (or 15973337 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 28751988600 in words is "twenty-eight billion, seven hundred fifty-one million, nine hundred eighty-eight thousand, six hundred".