28811985676 has 12 divisors (see below), whose sum is σ = 50504874280. Its totient is φ = 14382021600.

The previous prime is 28811985661. The next prime is 28811985701. The reversal of 28811985676 is 67658911882.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5990106 + ... + 5994913.

Almost surely, 2^28811985676 is an apocalyptic number.

It is an amenable number.

28811985676 is a deficient number, since it is larger than the sum of its proper divisors (21692888604).

28811985676 is a wasteful number, since it uses less digits than its factorization.

28811985676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11985624 (or 11985622 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 61.

The spelling of 28811985676 in words is "twenty-eight billion, eight hundred eleven million, nine hundred eighty-five thousand, six hundred seventy-six".