22528856 has 64 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 9210240.

The previous prime is 22528841. The next prime is 22528907. The reversal of 22528856 is 65882522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 171911 + ... + 172041.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^22528856 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 22528856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25280640).

22528856 is an abundant number, since it is smaller than the sum of its proper divisors (28032424).

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

22528856 is a wasteful number, since it uses less digits than its factorization.

22528856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 260 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 22528856 is about 4746.4572051163. The cubic root of 22528856 is about 282.4314439330.

The spelling of 22528856 in words is "twenty-two million, five hundred twenty-eight thousand, eight hundred fifty-six".