22488664 has 64 divisors (see below), whose sum is σ = 49351680. Its totient is φ = 9504000.

The previous prime is 22488649. The next prime is 22488673. The reversal of 22488664 is 46688422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82849 + ... + 83119.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 2^22488664 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 22488664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24675840).

22488664 is an abundant number, since it is smaller than the sum of its proper divisors (26863016).

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

22488664 is a wasteful number, since it uses less digits than its factorization.

22488664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 348 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 22488664 is about 4742.2214203894. The cubic root of 22488664 is about 282.2633892134.

It can be divided in two parts, 224 and 88664, that added together give a palindrome (88888).

The spelling of 22488664 in words is "twenty-two million, four hundred eighty-eight thousand, six hundred sixty-four".