22479172 has 12 divisors (see below), whose sum is σ = 39545856. Its totient is φ = 11180360.

The previous prime is 22479137. The next prime is 22479173. The reversal of 22479172 is 27197422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22479173) 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, 13948 + ... + 15475.

It is an arithmetic number, because the mean of its divisors is an integer number (3295488).

Almost surely, 2^22479172 is an apocalyptic number.

It is an amenable number.

22479172 is a deficient number, since it is larger than the sum of its proper divisors (17066684).

22479172 is a wasteful number, since it uses less digits than its factorization.

22479172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29618 (or 29616 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 22479172 is about 4741.2205179679. The cubic root of 22479172 is about 282.2236711118.

The spelling of 22479172 in words is "twenty-two million, four hundred seventy-nine thousand, one hundred seventy-two".