22561232 has 10 divisors (see below), whose sum is σ = 43712418. Its totient is φ = 11280608.

The previous prime is 22561219. The next prime is 22561243. The reversal of 22561232 is 23216522.

It can be written as a sum of positive squares in only one way, i.e., 22505536 + 55696 = 4744^2 + 236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22561198 and 22561207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705023 + ... + 705054.

Almost surely, 2^22561232 is an apocalyptic number.

It is an amenable number.

22561232 is a deficient number, since it is larger than the sum of its proper divisors (21151186).

22561232 is a wasteful number, since it uses less digits than its factorization.

22561232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410085 (or 1410079 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 22561232 is about 4749.8665244405. The cubic root of 22561232 is about 282.5666723362.

Adding to 22561232 its reverse (23216522), we get a palindrome (45777754).

The spelling of 22561232 in words is "twenty-two million, five hundred sixty-one thousand, two hundred thirty-two".