28933184 has 112 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 11182080.

The previous prime is 28933183. The next prime is 28933189. The reversal of 28933184 is 48133982.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (28933183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220799 + ... + 220929.

Almost surely, 2^28933184 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 28933184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36210240).

28933184 is an abundant number, since it is smaller than the sum of its proper divisors (43487296).

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

28933184 is a wasteful number, since it uses less digits than its factorization.

28933184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 28933184 is about 5378.9575198174. The cubic root of 28933184 is about 306.9955471914.

The spelling of 28933184 in words is "twenty-eight million, nine hundred thirty-three thousand, one hundred eighty-four".