22528264 has 72 divisors (see below), whose sum is σ = 50525370. Its totient is φ = 9377280.

The previous prime is 22528249. The next prime is 22528271. The reversal of 22528264 is 46282522.

It can be written as a sum of positive squares in 3 ways, for example, as 21548164 + 980100 = 4642^2 + 990^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 608854 + ... + 608890.

Almost surely, 2^22528264 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 22528264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25262685).

22528264 is an abundant number, since it is smaller than the sum of its proper divisors (27997106).

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

22528264 is a wasteful number, since it uses less digits than its factorization.

22528264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 67 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 22528264 is about 4746.3948424041. The cubic root of 22528264 is about 282.4289700556.

The spelling of 22528264 in words is "twenty-two million, five hundred twenty-eight thousand, two hundred sixty-four".