28075164 has 24 divisors (see below), whose sum is σ = 70548240. Its totient is φ = 8638464.

The previous prime is 28075129. The next prime is 28075169. The reversal of 28075164 is 46157082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89829 + ... + 90140.

It is an arithmetic number, because the mean of its divisors is an integer number (2939510).

Almost surely, 2^28075164 is an apocalyptic number.

It is an amenable number.

28075164 is an abundant number, since it is smaller than the sum of its proper divisors (42473076).

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

28075164 is a wasteful number, since it uses less digits than its factorization.

28075164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179989 (or 179987 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28075164 is about 5298.6001925037. The cubic root of 28075164 is about 303.9303712879.

The spelling of 28075164 in words is "twenty-eight million, seventy-five thousand, one hundred sixty-four".