28386256 has 20 divisors (see below), whose sum is σ = 55126432. Its totient is φ = 14160096.

The previous prime is 28386251. The next prime is 28386307. The reversal of 28386256 is 65268382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28386251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5971 + ... + 9613.

Almost surely, 2^28386256 is an apocalyptic number.

It is an amenable number.

28386256 is a deficient number, since it is larger than the sum of its proper divisors (26740176).

28386256 is a wasteful number, since it uses less digits than its factorization.

28386256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138 (or 4132 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 28386256 is about 5327.8753739178. The cubic root of 28386256 is about 305.0488356810.

The spelling of 28386256 in words is "twenty-eight million, three hundred eighty-six thousand, two hundred fifty-six".