22504509 has 12 divisors (see below), whose sum is σ = 32550336. Its totient is φ = 14982792.

The previous prime is 22504483. The next prime is 22504529. The reversal of 22504509 is 90540522.

It is not a de Polignac number, because 22504509 - 2⁵ = 22504477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22504529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8794 + ... + 11060.

It is an arithmetic number, because the mean of its divisors is an integer number (2712528).

Almost surely, 2^22504509 is an apocalyptic number.

It is an amenable number.

22504509 is a deficient number, since it is larger than the sum of its proper divisors (10045827).

22504509 is a wasteful number, since it uses less digits than its factorization.

22504509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376 (or 3373 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 22504509 is about 4743.8917567752. The cubic root of 22504509 is about 282.3296657667.

The spelling of 22504509 in words is "twenty-two million, five hundred four thousand, five hundred nine".