22690372 has 12 divisors (see below), whose sum is σ = 40154940. Its totient is φ = 11217536.

The previous prime is 22690321. The next prime is 22690387. The reversal of 22690372 is 27309622.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 21399876 = 1136^2 + 4626^2 .

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 3 ways as a sum of consecutive naturals, for example, 31513 + ... + 32224.

It is an arithmetic number, because the mean of its divisors is an integer number (3346245).

Almost surely, 2^22690372 is an apocalyptic number.

It is an amenable number.

22690372 is a deficient number, since it is larger than the sum of its proper divisors (17464568).

22690372 is a wasteful number, since it uses less digits than its factorization.

22690372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63830 (or 63828 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 22690372 is about 4763.4411930872. The cubic root of 22690372 is about 283.1047820859.

Adding to 22690372 its reverse (27309622), we get a palindrome (49999994).

The spelling of 22690372 in words is "twenty-two million, six hundred ninety thousand, three hundred seventy-two".