28162164 has 12 divisors (see below), whose sum is σ = 65711744. Its totient is φ = 9387384.

The previous prime is 28162153. The next prime is 28162171. The reversal of 28162164 is 46126182.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173412 + ... + 1173435.

Almost surely, 2^28162164 is an apocalyptic number.

It is an amenable number.

28162164 is an abundant number, since it is smaller than the sum of its proper divisors (37549580).

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

28162164 is a wasteful number, since it uses less digits than its factorization.

28162164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346854 (or 2346852 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 28162164 is about 5306.8035576984. The cubic root of 28162164 is about 304.2439898328.

The spelling of 28162164 in words is "twenty-eight million, one hundred sixty-two thousand, one hundred sixty-four".