22429972 has 6 divisors (see below), whose sum is σ = 39252458. Its totient is φ = 11214984.

The previous prime is 22429949. The next prime is 22429999. The reversal of 22429972 is 27992422.

It can be written as a sum of positive squares in only one way, i.e., 21846276 + 583696 = 4674^2 + 764^2 .

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, 2803743 + ... + 2803750.

Almost surely, 2^22429972 is an apocalyptic number.

It is an amenable number.

22429972 is a deficient number, since it is larger than the sum of its proper divisors (16822486).

22429972 is a wasteful number, since it uses less digits than its factorization.

22429972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607497 (or 5607495 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 22429972 is about 4736.0291384239. The cubic root of 22429972 is about 282.0176204137.

The spelling of 22429972 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred seventy-two".