22689172 has 12 divisors (see below), whose sum is σ = 43315776. Its totient is φ = 10313240.

The previous prime is 22689167. The next prime is 22689187. The reversal of 22689172 is 27198622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257788 + ... + 257875.

It is an arithmetic number, because the mean of its divisors is an integer number (3609648).

Almost surely, 2^22689172 is an apocalyptic number.

22689172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22689172 is a deficient number, since it is larger than the sum of its proper divisors (20626604).

22689172 is a wasteful number, since it uses less digits than its factorization.

22689172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515678 (or 515676 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 22689172 is about 4763.3152320626. The cubic root of 22689172 is about 283.0997912506.

It can be divided in two parts, 226 and 89172, that added together give a palindrome (89398).

The spelling of 22689172 in words is "twenty-two million, six hundred eighty-nine thousand, one hundred seventy-two".