22997272 has 16 divisors (see below), whose sum is σ = 43432200. Its totient is φ = 11415360.

The previous prime is 22997251. The next prime is 22997279. The reversal of 22997272 is 27279922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22997279) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9229 + ... + 11452.

Almost surely, 2^22997272 is an apocalyptic number.

It is an amenable number.

22997272 is a deficient number, since it is larger than the sum of its proper divisors (20434928).

22997272 is a wasteful number, since it uses less digits than its factorization.

22997272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20826 (or 20822 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 22997272 is about 4795.5471012180. The cubic root of 22997272 is about 284.3754539622.

The spelling of 22997272 in words is "twenty-two million, nine hundred ninety-seven thousand, two hundred seventy-two".