28933256 has 16 divisors (see below), whose sum is σ = 59181840. Its totient is φ = 13151440.

The previous prime is 28933217. The next prime is 28933259. The reversal of 28933256 is 65233982.

It is not an unprimeable number, because it can be changed into a prime (28933259) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 164306 + ... + 164481.

It is an arithmetic number, because the mean of its divisors is an integer number (3698865).

Almost surely, 2^28933256 is an apocalyptic number.

It is an amenable number.

28933256 is an abundant number, since it is smaller than the sum of its proper divisors (30248584).

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

28933256 is a wasteful number, since it uses less digits than its factorization.

28933256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328804 (or 328800 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 28933256 is about 5378.9642125599. The cubic root of 28933256 is about 306.9958018432.

The spelling of 28933256 in words is "twenty-eight million, nine hundred thirty-three thousand, two hundred fifty-six".