28366164 has 72 divisors (see below), whose sum is σ = 76352640. Its totient is φ = 8854272.

The previous prime is 28366157. The next prime is 28366171. The reversal of 28366164 is 46166382.

28366164 is a `hidden beast` number, since 2 + 8 + 36 + 616 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (28366157) and next prime (28366171).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77109 + ... + 77475.

Almost surely, 2^28366164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28366164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38176320).

28366164 is an abundant number, since it is smaller than the sum of its proper divisors (47986476).

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

28366164 is a wasteful number, since it uses less digits than its factorization.

28366164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 504 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28366164 is about 5325.9894855322. The cubic root of 28366164 is about 304.9768467599.

The spelling of 28366164 in words is "twenty-eight million, three hundred sixty-six thousand, one hundred sixty-four".