28368688 has 20 divisors (see below), whose sum is σ = 55186200. Its totient is φ = 14127104.

The previous prime is 28368643. The next prime is 28368701. The reversal of 28368688 is 88686382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (2759310).

Almost surely, 2^28368688 is an apocalyptic number.

It is an amenable number.

28368688 is a deficient number, since it is larger than the sum of its proper divisors (26817512).

28368688 is a wasteful number, since it uses less digits than its factorization.

28368688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164 (or 7158 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 28368688 is about 5326.2264315367. The cubic root of 28368688 is about 304.9858920286.

The spelling of 28368688 in words is "twenty-eight million, three hundred sixty-eight thousand, six hundred eighty-eight".