28870204 has 12 divisors (see below), whose sum is σ = 55115928. Its totient is φ = 13122800.

The previous prime is 28870189. The next prime is 28870211. The reversal of 28870204 is 40207882.

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, 328027 + ... + 328114.

It is an arithmetic number, because the mean of its divisors is an integer number (4592994).

Almost surely, 2^28870204 is an apocalyptic number.

It is an amenable number.

28870204 is a deficient number, since it is larger than the sum of its proper divisors (26245724).

28870204 is a wasteful number, since it uses less digits than its factorization.

28870204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656156 (or 656154 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28870204 is about 5373.1000362919. The cubic root of 28870204 is about 306.7726356108.

The spelling of 28870204 in words is "twenty-eight million, eight hundred seventy thousand, two hundred four".