28760872 has 32 divisors (see below), whose sum is σ = 65257920. Its totient is φ = 11600640.

The previous prime is 28760867. The next prime is 28760881. The reversal of 28760872 is 27806782.

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, 14154 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (2039310).

Almost surely, 2^28760872 is an apocalyptic number.

It is an amenable number.

28760872 is an abundant number, since it is smaller than the sum of its proper divisors (36497048).

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

28760872 is a wasteful number, since it uses less digits than its factorization.

28760872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30241 (or 30237 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 28760872 is about 5362.9163707819. The cubic root of 28760872 is about 306.3848945099.

The spelling of 28760872 in words is "twenty-eight million, seven hundred sixty thousand, eight hundred seventy-two".