22224732 has 24 divisors (see below), whose sum is σ = 51977856. Its totient is φ = 7391088.

The previous prime is 22224721. The next prime is 22224743. The reversal of 22224732 is 23742222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22224721) and next prime (22224743).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3943 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (2165744).

Almost surely, 2^22224732 is an apocalyptic number.

It is an amenable number.

22224732 is an abundant number, since it is smaller than the sum of its proper divisors (29753124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22224732 is a wasteful number, since it uses less digits than its factorization.

22224732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297 (or 4295 counting only the distinct ones).

The product of its digits is 2688, while the sum is 24.

The square root of 22224732 is about 4714.3114025274. The cubic root of 22224732 is about 281.1548055116.

Adding to 22224732 its reverse (23742222), we get a palindrome (45966954).

The spelling of 22224732 in words is "twenty-two million, two hundred twenty-four thousand, seven hundred thirty-two".