28372 has 12 divisors (see below), whose sum is σ = 51156. Its totient is φ = 13760.

The previous prime is 28351. The next prime is 28387. The reversal of 28372 is 27382.

It is a happy number.

28372 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 2 ways, for example, as 12996 + 15376 = 114^2 + 124^2 .

It is a nialpdrome in base 13.

It is a congruent number.

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, 78 + ... + 250.

It is an arithmetic number, because the mean of its divisors is an integer number (4263).

2²⁸³⁷² is an apocalyptic number.

It is an amenable number.

28372 is a deficient number, since it is larger than the sum of its proper divisors (22784).

28372 is a wasteful number, since it uses less digits than its factorization.

28372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 216 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 28372 is about 168.4399002612. The cubic root of 28372 is about 30.4997760442.

Subtracting from 28372 its reverse (27382), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 28 and 372, that added together give a square (400 = 20²).

The spelling of 28372 in words is "twenty-eight thousand, three hundred seventy-two".