22023 has 6 divisors (see below), whose sum is σ = 31824. Its totient is φ = 14676.

The previous prime is 22013. The next prime is 22027. The reversal of 22023 is 32022.

It is not a de Polignac number, because 22023 - 2⁵ = 21991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2447 = 22023 / (2 + 2 + 0 + 2 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 21996 and 22014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22027) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 1215 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (5304).

2²²⁰²³ is an apocalyptic number.

22023 is a deficient number, since it is larger than the sum of its proper divisors (9801).

22023 is a wasteful number, since it uses less digits than its factorization.

22023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 22023 is about 148.4014824724. The cubic root of 22023 is about 28.0301545882.

Adding to 22023 its reverse (32022), we get a palindrome (54045).

Subtracting 22023 from its reverse (32022), we obtain a palindrome (9999).

It can be divided in two parts, 220 and 23, that added together give a 5-th power (243 = 3⁵).

The spelling of 22023 in words is "twenty-two thousand, twenty-three", and thus it is an iban number.