28488 has 16 divisors (see below), whose sum is σ = 71280. Its totient is φ = 9488.

The previous prime is 28477. The next prime is 28493. The reversal of 28488 is 88482.

28488 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×28488² = 1623132288, which contains 22 as substring.

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

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28488.

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, 570 + ... + 617.

It is an arithmetic number, because the mean of its divisors is an integer number (4455).

2²⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

28488 is an abundant number, since it is smaller than the sum of its proper divisors (42792).

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 (35640).

28488 is a wasteful number, since it uses less digits than its factorization.

28488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1192 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 28488 is about 168.7838854867. The cubic root of 28488 is about 30.5412860215.

The spelling of 28488 in words is "twenty-eight thousand, four hundred eighty-eight".