28912164 has 12 divisors (see below), whose sum is σ = 67461744. Its totient is φ = 9637384.

The previous prime is 28912157. The next prime is 28912171. The reversal of 28912164 is 46121982.

It is an interprime number because it is at equal distance from previous prime (28912157) and next prime (28912171).

It is a tau number, because it is divible by the number of its divisors (12).

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, 1204662 + ... + 1204685.

It is an arithmetic number, because the mean of its divisors is an integer number (5621812).

Almost surely, 2^28912164 is an apocalyptic number.

It is an amenable number.

28912164 is an abundant number, since it is smaller than the sum of its proper divisors (38549580).

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

28912164 is a wasteful number, since it uses less digits than its factorization.

28912164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409354 (or 2409352 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 28912164 is about 5377.0032546020. The cubic root of 28912164 is about 306.9211849442.

The spelling of 28912164 in words is "twenty-eight million, nine hundred twelve thousand, one hundred sixty-four".