22564844 has 12 divisors (see below), whose sum is σ = 39564504. Its totient is φ = 11260704.

The previous prime is 22564781. The next prime is 22564847. The reversal of 22564844 is 44846522.

It is not an unprimeable number, because it can be changed into a prime (22564847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2969 + ... + 7344.

It is an arithmetic number, because the mean of its divisors is an integer number (3297042).

Almost surely, 2^22564844 is an apocalyptic number.

It is an amenable number.

22564844 is a deficient number, since it is larger than the sum of its proper divisors (16999660).

22564844 is a wasteful number, since it uses less digits than its factorization.

22564844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10864 (or 10862 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

The square root of 22564844 is about 4750.2467304341. The cubic root of 22564844 is about 282.5817509507.

The spelling of 22564844 in words is "twenty-two million, five hundred sixty-four thousand, eight hundred forty-four".