28315256 has 32 divisors (see below), whose sum is σ = 54810000. Its totient is φ = 13704960.

The previous prime is 28315247. The next prime is 28315289. The reversal of 28315256 is 65251382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56495 + ... + 56993.

Almost surely, 2^28315256 is an apocalyptic number.

It is an amenable number.

28315256 is a deficient number, since it is larger than the sum of its proper divisors (26494744).

28315256 is a wasteful number, since it uses less digits than its factorization.

28315256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 715 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 28315256 is about 5321.2081334975. The cubic root of 28315256 is about 304.7942928965.

The spelling of 28315256 in words is "twenty-eight million, three hundred fifteen thousand, two hundred fifty-six".