22528332 has 72 divisors (see below), whose sum is σ = 60972912. Its totient is φ = 6988800.

The previous prime is 22528321. The next prime is 22528361. The reversal of 22528332 is 23382522.

It is a junction number, because it is equal to n+sod(n) for n = 22528296 and 22528305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80032 + ... + 80312.

It is an arithmetic number, because the mean of its divisors is an integer number (846846).

Almost surely, 2^22528332 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 22528332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30486456).

22528332 is an abundant number, since it is smaller than the sum of its proper divisors (38444580).

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

22528332 is a wasteful number, since it uses less digits than its factorization.

22528332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 434 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 22528332 is about 4746.4020057302. The cubic root of 22528332 is about 282.4292542194.

The spelling of 22528332 in words is "twenty-two million, five hundred twenty-eight thousand, three hundred thirty-two".