22539928 has 32 divisors (see below), whose sum is σ = 44737200. Its totient is φ = 10616832.

The previous prime is 22539917. The next prime is 22539929. The reversal of 22539928 is 82993522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22539929) 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, 38776 + ... + 39352.

Almost surely, 2^22539928 is an apocalyptic number.

It is an amenable number.

22539928 is a deficient number, since it is larger than the sum of its proper divisors (22197272).

22539928 is a wasteful number, since it uses less digits than its factorization.

22539928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 855 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 22539928 is about 4747.6234054525. The cubic root of 22539928 is about 282.4777041427.

The spelling of 22539928 in words is "twenty-two million, five hundred thirty-nine thousand, nine hundred twenty-eight".