22292224 has 54 divisors (see below), whose sum is σ = 46815776. Its totient is φ = 10583040.

The previous prime is 22292201. The next prime is 22292239. The reversal of 22292224 is 42229222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420582 + ... + 420634.

Almost surely, 2^22292224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22292224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23407888).

22292224 is an abundant number, since it is smaller than the sum of its proper divisors (24523552).

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

22292224 is an frugal number, since it uses more digits than its factorization.

22292224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 86 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 22292224 is about 4721.4641796799. The cubic root of 22292224 is about 281.4391212614.

The spelling of 22292224 in words is "twenty-two million, two hundred ninety-two thousand, two hundred twenty-four".