22765568 has 56 divisors (see below), whose sum is σ = 52163472. Its totient is φ = 9732096.

The previous prime is 22765507. The next prime is 22765597. The reversal of 22765568 is 86556722.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57146 + ... + 57542.

Almost surely, 2^22765568 is an apocalyptic number.

22765568 is a gapful number since it is divisible by the number (28) 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 22765568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26081736).

22765568 is an abundant number, since it is smaller than the sum of its proper divisors (29397904).

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

22765568 is an frugal number, since it uses more digits than its factorization.

22765568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 406 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 22765568 is about 4771.3276978216. The cubic root of 22765568 is about 283.4171741118.

The spelling of 22765568 in words is "twenty-two million, seven hundred sixty-five thousand, five hundred sixty-eight".