22561736 has 16 divisors (see below), whose sum is σ = 42397440. Its totient is φ = 11255760.

The previous prime is 22561733. The next prime is 22561751. The reversal of 22561736 is 63716522.

It is not an unprimeable number, because it can be changed into a prime (22561733) 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, 1001 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (2649840).

Almost surely, 2^22561736 is an apocalyptic number.

It is an amenable number.

22561736 is a deficient number, since it is larger than the sum of its proper divisors (19835704).

22561736 is a wasteful number, since it uses less digits than its factorization.

22561736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284 (or 6280 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 22561736 is about 4749.9195782666. The cubic root of 22561736 is about 282.5687764255.

The spelling of 22561736 in words is "twenty-two million, five hundred sixty-one thousand, seven hundred thirty-six".