28316388 has 24 divisors (see below), whose sum is σ = 66280480. Its totient is φ = 9408960.

The previous prime is 28316371. The next prime is 28316417. The reversal of 28316388 is 88361382.

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, 408 + ... + 7536.

Almost surely, 2^28316388 is an apocalyptic number.

It is an amenable number.

28316388 is an abundant number, since it is smaller than the sum of its proper divisors (37964092).

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

28316388 is a wasteful number, since it uses less digits than its factorization.

28316388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7467 (or 7465 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 28316388 is about 5321.3144992567. The cubic root of 28316388 is about 304.7983545767.

The spelling of 28316388 in words is "twenty-eight million, three hundred sixteen thousand, three hundred eighty-eight".