28088856 has 48 divisors (see below), whose sum is σ = 78897000. Its totient is φ = 9362304.

The previous prime is 28088843. The next prime is 28088861. The reversal of 28088856 is 65888082.

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 11 ways as a sum of consecutive naturals, for example, 5281 + ... + 9168.

Almost surely, 2^28088856 is an apocalyptic number.

It is an amenable number.

28088856 is an abundant number, since it is smaller than the sum of its proper divisors (50808144).

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

28088856 is a wasteful number, since it uses less digits than its factorization.

28088856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470 (or 14454 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 28088856 is about 5299.8920743728. The cubic root of 28088856 is about 303.9797712763.

It can be divided in two parts, 2808 and 8856, that added together give a square (11664 = 108²).

The spelling of 28088856 in words is "twenty-eight million, eighty-eight thousand, eight hundred fifty-six".