22564224 has 64 divisors (see below), whose sum is σ = 66606000. Its totient is φ = 7520256.

The previous prime is 22564211. The next prime is 22564231. The reversal of 22564224 is 42246522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 6720.

Almost surely, 2^22564224 is an apocalyptic number.

22564224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22564224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33303000).

22564224 is an abundant number, since it is smaller than the sum of its proper divisors (44041776).

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

22564224 is an equidigital number, since it uses as much as digits as its factorization.

22564224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552 (or 6534 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 22564224 is about 4750.1814702177. The cubic root of 22564224 is about 282.5791628201.

The spelling of 22564224 in words is "twenty-two million, five hundred sixty-four thousand, two hundred twenty-four".