22664272 has 20 divisors (see below), whose sum is σ = 44082496. Its totient is φ = 11288160.

The previous prime is 22664249. The next prime is 22664273. The reversal of 22664272 is 27246622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22664273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723 + ... + 6949.

Almost surely, 2^22664272 is an apocalyptic number.

It is an amenable number.

22664272 is a deficient number, since it is larger than the sum of its proper divisors (21418224).

22664272 is a wasteful number, since it uses less digits than its factorization.

22664272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506 (or 5500 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 22664272 is about 4760.7007887495. The cubic root of 22664272 is about 282.9961916854.

The spelling of 22664272 in words is "twenty-two million, six hundred sixty-four thousand, two hundred seventy-two".