22457272 has 32 divisors (see below), whose sum is σ = 45331920. Its totient is φ = 10391040.

The previous prime is 22457219. The next prime is 22457273. The reversal of 22457272 is 27275422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22457273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6943 + ... + 9649.

Almost surely, 2^22457272 is an apocalyptic number.

It is an amenable number.

22457272 is an abundant number, since it is smaller than the sum of its proper divisors (22874648).

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

22457272 is a wasteful number, since it uses less digits than its factorization.

22457272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2787 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 22457272 is about 4738.9104232935. The cubic root of 22457272 is about 282.1319905903.

The spelling of 22457272 in words is "twenty-two million, four hundred fifty-seven thousand, two hundred seventy-two".