28164304 has 20 divisors (see below), whose sum is σ = 62364064. Its totient is φ = 12070368.

The previous prime is 28164293. The next prime is 28164329. The reversal of 28164304 is 40346182.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125622 + ... + 125845.

Almost surely, 2^28164304 is an apocalyptic number.

It is an amenable number.

28164304 is an abundant number, since it is smaller than the sum of its proper divisors (34199760).

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

28164304 is a wasteful number, since it uses less digits than its factorization.

28164304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251482 (or 251476 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28164304 is about 5307.0051818328. The cubic root of 28164304 is about 304.2516959836.

The spelling of 28164304 in words is "twenty-eight million, one hundred sixty-four thousand, three hundred four".