28664164 has 12 divisors (see below), whose sum is σ = 52343424. Its totient is φ = 13708904.

The previous prime is 28664137. The next prime is 28664171. The reversal of 28664164 is 46146682.

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, 155692 + ... + 155875.

It is an arithmetic number, because the mean of its divisors is an integer number (4361952).

Almost surely, 2^28664164 is an apocalyptic number.

It is an amenable number.

28664164 is a deficient number, since it is larger than the sum of its proper divisors (23679260).

28664164 is a wasteful number, since it uses less digits than its factorization.

28664164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311594 (or 311592 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 28664164 is about 5353.8924158037. The cubic root of 28664164 is about 306.0411040231.

The spelling of 28664164 in words is "twenty-eight million, six hundred sixty-four thousand, one hundred sixty-four".