28539204 has 24 divisors (see below), whose sum is σ = 67505760. Its totient is φ = 9382464.

The previous prime is 28539179. The next prime is 28539211. The reversal of 28539204 is 40293582.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15414 + ... + 17165.

It is an arithmetic number, because the mean of its divisors is an integer number (2812740).

Almost surely, 2^28539204 is an apocalyptic number.

It is an amenable number.

28539204 is an abundant number, since it is smaller than the sum of its proper divisors (38966556).

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

28539204 is a wasteful number, since it uses less digits than its factorization.

28539204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32659 (or 32657 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 28539204 is about 5342.2096551895. The cubic root of 28539204 is about 305.5957325364.

The spelling of 28539204 in words is "twenty-eight million, five hundred thirty-nine thousand, two hundred four".