22716564 has 48 divisors (see below), whose sum is σ = 57426432. Its totient is φ = 6947712.

The previous prime is 22716559. The next prime is 22716623. The reversal of 22716564 is 46561722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34462 + ... + 35114.

It is an arithmetic number, because the mean of its divisors is an integer number (1196384).

Almost surely, 2^22716564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22716564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28713216).

22716564 is an abundant number, since it is smaller than the sum of its proper divisors (34709868).

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

22716564 is a wasteful number, since it uses less digits than its factorization.

22716564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 894 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 22716564 is about 4766.1896731037. The cubic root of 22716564 is about 283.2136715766.

The spelling of 22716564 in words is "twenty-two million, seven hundred sixteen thousand, five hundred sixty-four".