28918704 has 40 divisors (see below), whose sum is σ = 76449472. Its totient is φ = 9414720.

The previous prime is 28918699. The next prime is 28918711. The reversal of 28918704 is 40781982.

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, 4942 + ... + 9069.

Almost surely, 2^28918704 is an apocalyptic number.

28918704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28918704 is an abundant number, since it is smaller than the sum of its proper divisors (47530768).

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

28918704 is a wasteful number, since it uses less digits than its factorization.

28918704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14065 (or 14059 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28918704 is about 5377.6113656530. The cubic root of 28918704 is about 306.9443252992.

The spelling of 28918704 in words is "twenty-eight million, nine hundred eighteen thousand, seven hundred four".