28556768 has 24 divisors (see below), whose sum is σ = 57017520. Its totient is φ = 14076160.

The previous prime is 28556747. The next prime is 28556779. The reversal of 28556768 is 86765582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (2375730).

Almost surely, 2^28556768 is an apocalyptic number.

It is an amenable number.

28556768 is a deficient number, since it is larger than the sum of its proper divisors (28460752).

28556768 is a wasteful number, since it uses less digits than its factorization.

28556768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12650 (or 12642 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 28556768 is about 5343.8532913994. The cubic root of 28556768 is about 305.6584110272.

The spelling of 28556768 in words is "twenty-eight million, five hundred fifty-six thousand, seven hundred sixty-eight".