28323 has 8 divisors (see below), whose sum is σ = 42000. Its totient is φ = 18864.

The previous prime is 28319. The next prime is 28349. The reversal of 28323 is 32382.

It is not a de Polignac number, because 28323 - 2² = 28319 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 28296 and 28305.

It is not an unprimeable number, because it can be changed into a prime (28393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (5250).

2²⁸³²³ is an apocalyptic number.

28323 is a deficient number, since it is larger than the sum of its proper divisors (13677).

28323 is a wasteful number, since it uses less digits than its factorization.

28323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1052 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 28323 is about 168.2943849331. The cubic root of 28323 is about 30.4822076645.

It can be divided in two parts, 28 and 323, that added together give a triangular number (351 = T₂₆).

The spelling of 28323 in words is "twenty-eight thousand, three hundred twenty-three".