28328568 has 32 divisors (see below), whose sum is σ = 70958160. Its totient is φ = 9424640.

The previous prime is 28328551. The next prime is 28328591. The reversal of 28328568 is 86582382.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18388 + ... + 19868.

Almost surely, 2^28328568 is an apocalyptic number.

It is an amenable number.

28328568 is an abundant number, since it is smaller than the sum of its proper divisors (42629592).

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

28328568 is a wasteful number, since it uses less digits than its factorization.

28328568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 2283 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 28328568 is about 5322.4588302776. The cubic root of 28328568 is about 304.8420502604.

The spelling of 28328568 in words is "twenty-eight million, three hundred twenty-eight thousand, five hundred sixty-eight".