22505232 has 20 divisors (see below), whose sum is σ = 58138640. Its totient is φ = 7501728.

The previous prime is 22505207. The next prime is 22505239. The reversal of 22505232 is 23250522.

It is a junction number, because it is equal to n+sod(n) for n = 22505199 and 22505208.

It is not an unprimeable number, because it can be changed into a prime (22505239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234382 + ... + 234477.

It is an arithmetic number, because the mean of its divisors is an integer number (2906932).

Almost surely, 2^22505232 is an apocalyptic number.

It is an amenable number.

22505232 is an abundant number, since it is smaller than the sum of its proper divisors (35633408).

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

22505232 is a wasteful number, since it uses less digits than its factorization.

22505232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468870 (or 468864 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22505232 is about 4743.9679594196. The cubic root of 22505232 is about 282.3326891929.

Adding to 22505232 its reverse (23250522), we get a palindrome (45755754).

The spelling of 22505232 in words is "twenty-two million, five hundred five thousand, two hundred thirty-two".