22612172 has 24 divisors (see below), whose sum is σ = 43509312. Its totient is φ = 10197200.

The previous prime is 22612169. The next prime is 22612189. The reversal of 22612172 is 27121622.

It is a happy number.

It is a super-2 number, since 2×22612172² = 1022620645115168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3803 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (1812888).

Almost surely, 2^22612172 is an apocalyptic number.

22612172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22612172 is a deficient number, since it is larger than the sum of its proper divisors (20897140).

22612172 is a wasteful number, since it uses less digits than its factorization.

22612172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069 (or 4067 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 22612172 is about 4755.2257569962. The cubic root of 22612172 is about 282.7791773789.

Adding to 22612172 its reverse (27121622), we get a palindrome (49733794).

The spelling of 22612172 in words is "twenty-two million, six hundred twelve thousand, one hundred seventy-two".