22564668 has 96 divisors (see below), whose sum is σ = 63705600. Its totient is φ = 6080256.

The previous prime is 22564667. The next prime is 22564669. The reversal of 22564668 is 86646522.

It is an interprime number because it is at equal distance from previous prime (22564667) and next prime (22564669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143646 + ... + 143802.

It is an arithmetic number, because the mean of its divisors is an integer number (663600).

Almost surely, 2^22564668 is an apocalyptic number.

22564668 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 22564668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31852800).

22564668 is an abundant number, since it is smaller than the sum of its proper divisors (41140932).

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

22564668 is a wasteful number, since it uses less digits than its factorization.

22564668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 257 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 22564668 is about 4750.2282050445. The cubic root of 22564668 is about 282.5810162604.

It can be divided in two parts, 22564 and 668, that added together give a palindrome (23232).

The spelling of 22564668 in words is "twenty-two million, five hundred sixty-four thousand, six hundred sixty-eight".