28924 has 12 divisors (see below), whose sum is σ = 57904. Its totient is φ = 12384.

The previous prime is 28921. The next prime is 28927. The reversal of 28924 is 42982.

It is an interprime number because it is at equal distance from previous prime (28921) and next prime (28927).

28924 is an admirable number.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489 + ... + 544.

2²⁸⁹²⁴ is an apocalyptic number.

It is an amenable number.

28924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (28952).

28924 is a wasteful number, since it uses less digits than its factorization.

28924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1042 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 28924 is about 170.0705735864. The cubic root of 28924 is about 30.6963061477.

Subtracting from 28924 its product of digits (1152), we obtain a palindrome (27772).

It can be divided in two parts, 289 and 24, that added together give a palindrome (313).

The spelling of 28924 in words is "twenty-eight thousand, nine hundred twenty-four".