22791223 has 24 divisors (see below), whose sum is σ = 29353632. Its totient is φ = 17527104.

The previous prime is 22791221. The next prime is 22791227. The reversal of 22791223 is 32219722.

It is not a de Polignac number, because 22791223 - 2¹ = 22791221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22791191 and 22791200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22791221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23086 + ... + 24052.

It is an arithmetic number, because the mean of its divisors is an integer number (1223068).

Almost surely, 2^22791223 is an apocalyptic number.

22791223 is a deficient number, since it is larger than the sum of its proper divisors (6562409).

22791223 is a wasteful number, since it uses less digits than its factorization.

22791223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1024 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 22791223 is about 4774.0153958696. The cubic root of 22791223 is about 283.5235970807.

The spelling of 22791223 in words is "twenty-two million, seven hundred ninety-one thousand, two hundred twenty-three".