28776752788 has 48 divisors (see below), whose sum is σ = 62904812544. Its totient is φ = 11232990720.

The previous prime is 28776752773. The next prime is 28776752801. The reversal of 28776752788 is 88725767782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960331 + ... + 989842.

It is an arithmetic number, because the mean of its divisors is an integer number (1310516928).

Almost surely, 2^28776752788 is an apocalyptic number.

28776752788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28776752788 is an abundant number, since it is smaller than the sum of its proper divisors (34128059756).

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

28776752788 is a wasteful number, since it uses less digits than its factorization.

28776752788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950232 (or 1950230 counting only the distinct ones).

The product of its digits is 147517440, while the sum is 67.

The spelling of 28776752788 in words is "twenty-eight billion, seven hundred seventy-six million, seven hundred fifty-two thousand, seven hundred eighty-eight".