28968689976 has 32 divisors (see below), whose sum is σ = 74919027600. Its totient is φ = 9323256320.

The previous prime is 28968689923. The next prime is 28968689989. The reversal of 28968689976 is 67998686982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20810145 + ... + 20811536.

Almost surely, 2^28968689976 is an apocalyptic number.

It is an amenable number.

28968689976 is an abundant number, since it is smaller than the sum of its proper divisors (45950337624).

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

28968689976 is a wasteful number, since it uses less digits than its factorization.

28968689976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41621719 (or 41621715 counting only the distinct ones).

The product of its digits is 1128701952, while the sum is 78.

The spelling of 28968689976 in words is "twenty-eight billion, nine hundred sixty-eight million, six hundred eighty-nine thousand, nine hundred seventy-six".