28184 has 16 divisors (see below), whose sum is σ = 57120. Its totient is φ = 12960.

The previous prime is 28183. The next prime is 28201. The reversal of 28184 is 48182.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 239.

It is an arithmetic number, because the mean of its divisors is an integer number (3570).

2²⁸¹⁸⁴ is an apocalyptic number.

It is an amenable number.

28184 is an abundant number, since it is smaller than the sum of its proper divisors (28936).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28560).

28184 is a wasteful number, since it uses less digits than its factorization.

28184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 286 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

The square root of 28184 is about 167.8809101715. The cubic root of 28184 is about 30.4322603056.

Subtracting from 28184 its product of digits (512), we obtain a palindrome (27672).

It can be divided in two parts, 28 and 184, that added together give a palindrome (212).

The spelling of 28184 in words is "twenty-eight thousand, one hundred eighty-four".