22557568 has 64 divisors (see below), whose sum is σ = 50465520. Its totient is φ = 9953280.

The previous prime is 22557559. The next prime is 22557569. The reversal of 22557568 is 86575522.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22557568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22557569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51880 + ... + 52312.

Almost surely, 2^22557568 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 22557568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25232760).

22557568 is an abundant number, since it is smaller than the sum of its proper divisors (27907952).

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

22557568 is a wasteful number, since it uses less digits than its factorization.

22557568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 483 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 22557568 is about 4749.4808137311. The cubic root of 22557568 is about 282.5513749987.

The spelling of 22557568 in words is "twenty-two million, five hundred fifty-seven thousand, five hundred sixty-eight".