28752268 has 12 divisors (see below), whose sum is σ = 50358672. Its totient is φ = 14364080.

The previous prime is 28752259. The next prime is 28752299. The reversal of 28752268 is 86225782.

It is a self number, because there is not a number n which added to its sum of digits gives 28752268.

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, 4353 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (4196556).

Almost surely, 2^28752268 is an apocalyptic number.

It is an amenable number.

28752268 is a deficient number, since it is larger than the sum of its proper divisors (21606404).

28752268 is a wasteful number, since it uses less digits than its factorization.

28752268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032 (or 6030 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 28752268 is about 5362.1141353015. The cubic root of 28752268 is about 306.3543391249.

The spelling of 28752268 in words is "twenty-eight million, seven hundred fifty-two thousand, two hundred sixty-eight".