22909568 has 64 divisors (see below), whose sum is σ = 50893920. Its totient is φ = 10183680.

The previous prime is 22909559. The next prime is 22909571. The reversal of 22909568 is 86590922.

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

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, 74471 + ... + 74777.

Almost surely, 2^22909568 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 22909568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25446960).

22909568 is an abundant number, since it is smaller than the sum of its proper divisors (27984352).

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

22909568 is a wasteful number, since it uses less digits than its factorization.

22909568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 22909568 is about 4786.3940498041. The cubic root of 22909568 is about 284.0134887464.

The spelling of 22909568 in words is "twenty-two million, nine hundred nine thousand, five hundred sixty-eight".