22972329 has 10 divisors (see below), whose sum is σ = 34316810. Its totient is φ = 15314832.

The previous prime is 22972283. The next prime is 22972343. The reversal of 22972329 is 92327922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16621929 + 6350400 = 4077^2 + 2520^2 .

It is not a de Polignac number, because 22972329 - 2⁸ = 22972073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22972293 and 22972302.

It is not an unprimeable number, because it can be changed into a prime (22972529) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 141724 + ... + 141885.

It is an arithmetic number, because the mean of its divisors is an integer number (3431681).

Almost surely, 2^22972329 is an apocalyptic number.

It is an amenable number.

22972329 is a deficient number, since it is larger than the sum of its proper divisors (11344481).

22972329 is an equidigital number, since it uses as much as digits as its factorization.

22972329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283621 (or 283612 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 22972329 is about 4792.9457539179. The cubic root of 22972329 is about 284.2726049093.

The spelling of 22972329 in words is "twenty-two million, nine hundred seventy-two thousand, three hundred twenty-nine".