23822 has 8 divisors (see below), whose sum is σ = 36696. Its totient is φ = 11592.

The previous prime is 23819. The next prime is 23827. The reversal of 23822 is 22832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 23822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 224.

It is an arithmetic number, because the mean of its divisors is an integer number (4587).

2²³⁸²² is an apocalyptic number.

23822 is the 83-rd centered heptagonal number.

23822 is a deficient number, since it is larger than the sum of its proper divisors (12874).

23822 is a wasteful number, since it uses less digits than its factorization.

23822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

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

The square root of 23822 is about 154.3437721452. The cubic root of 23822 is about 28.7735031502.

Subtracting from 23822 its reverse (22832), we obtain a triangular number (990 = T₄₄).

The spelling of 23822 in words is "twenty-three thousand, eight hundred twenty-two".