28232 has 8 divisors (see below), whose sum is σ = 52950. Its totient is φ = 14112.

The previous prime is 28229. The next prime is 28277. The reversal of 28232 is 23282.

It can be written as a sum of positive squares in only one way, i.e., 27556 + 676 = 166^2 + 26^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28232.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1757 + ... + 1772.

2²⁸²³² is an apocalyptic number.

It is an amenable number.

28232 is a deficient number, since it is larger than the sum of its proper divisors (24718).

28232 is a wasteful number, since it uses less digits than its factorization.

28232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535 (or 3531 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 28232 is about 168.0238078369. The cubic root of 28232 is about 30.4495268400.

Subtracting from 28232 its reverse (23282), we obtain a triangular number (4950 = T₉₉).

The spelling of 28232 in words is "twenty-eight thousand, two hundred thirty-two".