22497264 has 50 divisors (see below), whose sum is σ = 65117360. Its totient is φ = 7498656.

The previous prime is 22497263. The next prime is 22497271. The reversal of 22497264 is 46279422.

It is a super-2 number, since 2×22497264² = 1012253774971392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497263) 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, 7384 + ... + 9975.

Almost surely, 2^22497264 is an apocalyptic number.

22497264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22497264 is an abundant number, since it is smaller than the sum of its proper divisors (42620096).

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

22497264 is a wasteful number, since it uses less digits than its factorization.

22497264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17379 (or 17364 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 22497264 is about 4743.1280817621. The cubic root of 22497264 is about 282.2993652023.

The spelling of 22497264 in words is "twenty-two million, four hundred ninety-seven thousand, two hundred sixty-four".