22172992 has 14 divisors (see below), whose sum is σ = 43999658. Its totient is φ = 11086464.

The previous prime is 22172987. The next prime is 22173007. The reversal of 22172992 is 29927122.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 1597696 = 4536^2 + 1264^2 .

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, 173163 + ... + 173290.

Almost surely, 2^22172992 is an apocalyptic number.

It is an amenable number.

22172992 is a deficient number, since it is larger than the sum of its proper divisors (21826666).

22172992 is an equidigital number, since it uses as much as digits as its factorization.

22172992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346465 (or 346455 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 22172992 is about 4708.8206591460. The cubic root of 22172992 is about 280.9364563789.

The spelling of 22172992 in words is "twenty-two million, one hundred seventy-two thousand, nine hundred ninety-two".