28255732 has 12 divisors (see below), whose sum is σ = 49744800. Its totient is φ = 14042936.

The previous prime is 28255727. The next prime is 28255739. The reversal of 28255732 is 23755282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20482 + ... + 21817.

It is an arithmetic number, because the mean of its divisors is an integer number (4145400).

Almost surely, 2^28255732 is an apocalyptic number.

It is an amenable number.

28255732 is a deficient number, since it is larger than the sum of its proper divisors (21489068).

28255732 is a wasteful number, since it uses less digits than its factorization.

28255732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42470 (or 42468 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 28255732 is about 5315.6121002195. The cubic root of 28255732 is about 304.5805647283.

The spelling of 28255732 in words is "twenty-eight million, two hundred fifty-five thousand, seven hundred thirty-two".