22421568 has 84 divisors (see below), whose sum is σ = 64331088. Its totient is φ = 6888960.

The previous prime is 22421561. The next prime is 22421569. The reversal of 22421568 is 86512422.

It is not an unprimeable number, because it can be changed into a prime (22421561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32103 + ... + 32793.

Almost surely, 2^22421568 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 22421568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32165544).

22421568 is an abundant number, since it is smaller than the sum of its proper divisors (41909520).

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

22421568 is a wasteful number, since it uses less digits than its factorization.

22421568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 709 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 22421568 is about 4735.1418141382. The cubic root of 22421568 is about 281.9823941526.

The spelling of 22421568 in words is "twenty-two million, four hundred twenty-one thousand, five hundred sixty-eight".