22331172 has 24 divisors (see below), whose sum is σ = 52519936. Its totient is φ = 7384608.

The previous prime is 22331161. The next prime is 22331203. The reversal of 22331172 is 27113322.

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 7 ways as a sum of consecutive naturals, for example, 5803 + ... + 8850.

Almost surely, 2^22331172 is an apocalyptic number.

It is an amenable number.

22331172 is an abundant number, since it is smaller than the sum of its proper divisors (30188764).

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

22331172 is a wasteful number, since it uses less digits than its factorization.

22331172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14787 (or 14785 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 22331172 is about 4725.5869476712. The cubic root of 22331172 is about 281.6029319437.

Adding to 22331172 its reverse (27113322), we get a palindrome (49444494).

The spelling of 22331172 in words is "twenty-two million, three hundred thirty-one thousand, one hundred seventy-two".