22485564 has 18 divisors (see below), whose sum is σ = 56838600. Its totient is φ = 7495176.

The previous prime is 22485563. The next prime is 22485581. The reversal of 22485564 is 46558422.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 624599 = 22485564 / (2 + 2 + 4 + 8 + 5 + 5 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22485563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312264 + ... + 312335.

It is an arithmetic number, because the mean of its divisors is an integer number (3157700).

Almost surely, 2^22485564 is an apocalyptic number.

It is an amenable number.

22485564 is an abundant number, since it is smaller than the sum of its proper divisors (34353036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22485564 is a wasteful number, since it uses less digits than its factorization.

22485564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624609 (or 624604 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 22485564 is about 4741.8945580854. The cubic root of 22485564 is about 282.2504188755.

The spelling of 22485564 in words is "twenty-two million, four hundred eighty-five thousand, five hundred sixty-four".