22291372 has 48 divisors (see below), whose sum is σ = 42688800. Its totient is φ = 10160640.

The previous prime is 22291361. The next prime is 22291441. The reversal of 22291372 is 27319222.

It is a self number, because there is not a number n which added to its sum of digits gives 22291372.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 204454 + ... + 204562.

It is an arithmetic number, because the mean of its divisors is an integer number (889350).

Almost surely, 2^22291372 is an apocalyptic number.

It is an amenable number.

22291372 is a deficient number, since it is larger than the sum of its proper divisors (20397428).

22291372 is a wasteful number, since it uses less digits than its factorization.

22291372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 224 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 22291372 is about 4721.3739525693. The cubic root of 22291372 is about 281.4355357183.

The spelling of 22291372 in words is "twenty-two million, two hundred ninety-one thousand, three hundred seventy-two".