22540432 has 20 divisors (see below), whose sum is σ = 43753276. Its totient is φ = 11249280.

The previous prime is 22540421. The next prime is 22540451. The reversal of 22540432 is 23404522.

It can be written as a sum of positive squares in 2 ways, for example, as 4596736 + 17943696 = 2144^2 + 4236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11182 + ... + 13042.

Almost surely, 2^22540432 is an apocalyptic number.

It is an amenable number.

22540432 is a deficient number, since it is larger than the sum of its proper divisors (21212844).

22540432 is a wasteful number, since it uses less digits than its factorization.

22540432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2620 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22540432 is about 4747.6764843447. The cubic root of 22540432 is about 282.4798095576.

Adding to 22540432 its reverse (23404522), we get a palindrome (45944954).

The spelling of 22540432 in words is "twenty-two million, five hundred forty thousand, four hundred thirty-two".