28753688 has 16 divisors (see below), whose sum is σ = 56751000. Its totient is φ = 13620096.

The previous prime is 28753663. The next prime is 28753691. The reversal of 28753688 is 88635782.

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, 94433 + ... + 94736.

Almost surely, 2^28753688 is an apocalyptic number.

It is an amenable number.

28753688 is a deficient number, since it is larger than the sum of its proper divisors (27997312).

28753688 is a wasteful number, since it uses less digits than its factorization.

28753688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189194 (or 189190 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 28753688 is about 5362.2465441268. The cubic root of 28753688 is about 306.3593823908.

The spelling of 28753688 in words is "twenty-eight million, seven hundred fifty-three thousand, six hundred eighty-eight".