28880966904 has 32 divisors (see below), whose sum is σ = 72208944720. Its totient is φ = 9626118656.

The previous prime is 28880966903. The next prime is 28880966923. The reversal of 28880966904 is 40966908882.

It is a happy number.

It is a super-2 number, since 2×28880966904² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28880966903) 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, 251782 + ... + 348074.

Almost surely, 2^28880966904 is an apocalyptic number.

28880966904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28880966904 is an abundant number, since it is smaller than the sum of its proper divisors (43327977816).

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

28880966904 is a wasteful number, since it uses less digits than its factorization.

28880966904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108799 (or 108795 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 28880966904 in words is "twenty-eight billion, eight hundred eighty million, nine hundred sixty-six thousand, nine hundred four".