28815164 has 12 divisors (see below), whose sum is σ = 57630384. Its totient is φ = 12349344.

The previous prime is 28815139. The next prime is 28815173. The reversal of 28815164 is 46151882.

28815164 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514529 + ... + 514584.

It is an arithmetic number, because the mean of its divisors is an integer number (4802532).

Almost surely, 2^28815164 is an apocalyptic number.

It is an amenable number.

28815164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28815164 is a wasteful number, since it uses less digits than its factorization.

28815164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029124 (or 1029122 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 28815164 is about 5367.9757823597. The cubic root of 28815164 is about 306.5775612785.

The spelling of 28815164 in words is "twenty-eight million, eight hundred fifteen thousand, one hundred sixty-four".