28055164 has 12 divisors (see below), whose sum is σ = 49347144. Its totient is φ = 13955984.

The previous prime is 28055143. The next prime is 28055201. The reversal of 28055164 is 46155082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17014 + ... + 18589.

It is an arithmetic number, because the mean of its divisors is an integer number (4112262).

Almost surely, 2^28055164 is an apocalyptic number.

It is an amenable number.

28055164 is a deficient number, since it is larger than the sum of its proper divisors (21291980).

28055164 is a wasteful number, since it uses less digits than its factorization.

28055164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35804 (or 35802 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28055164 is about 5296.7125653560. The cubic root of 28055164 is about 303.8581835064.

The spelling of 28055164 in words is "twenty-eight million, fifty-five thousand, one hundred sixty-four".