28708976 has 20 divisors (see below), whose sum is σ = 57418944. Its totient is φ = 13891200.

The previous prime is 28708961. The next prime is 28709011. The reversal of 28708976 is 67980782.

28708976 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28708976.

It is a congruent number.

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, 28445 + ... + 29436.

Almost surely, 2^28708976 is an apocalyptic number.

It is an amenable number.

28708976 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28708976 is a wasteful number, since it uses less digits than its factorization.

28708976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57920 (or 57914 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 28708976 is about 5358.0757740069. The cubic root of 28708976 is about 306.2005036765.

The spelling of 28708976 in words is "twenty-eight million, seven hundred eight thousand, nine hundred seventy-six".