22528772 has 24 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 9616320.

The previous prime is 22528741. The next prime is 22528777. The reversal of 22528772 is 27782522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22528777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6104 + ... + 9072.

It is an arithmetic number, because the mean of its divisors is an integer number (1884960).

Almost surely, 2^22528772 is an apocalyptic number.

It is an amenable number.

22528772 is an abundant number, since it is smaller than the sum of its proper divisors (22710268).

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

22528772 is a wasteful number, since it uses less digits than its factorization.

22528772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251 (or 3249 counting only the distinct ones).

The product of its digits is 31360, while the sum is 35.

The square root of 22528772 is about 4746.4483564029. The cubic root of 22528772 is about 282.4310929125.

The spelling of 22528772 in words is "twenty-two million, five hundred twenty-eight thousand, seven hundred seventy-two".