22231744 has 28 divisors (see below), whose sum is σ = 44266104. Its totient is φ = 11078144.

The previous prime is 22231723. The next prime is 22231757. The reversal of 22231744 is 44713222.

It is a happy number.

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, 35724 + ... + 36340.

Almost surely, 2^22231744 is an apocalyptic number.

It is an amenable number.

22231744 is a deficient number, since it is larger than the sum of its proper divisors (22034360).

22231744 is an equidigital number, since it uses as much as digits as its factorization.

22231744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1182 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 22231744 is about 4715.0550367944. The cubic root of 22231744 is about 281.1843709255.

Adding to 22231744 its reverse (44713222), we get a palindrome (66944966).

The spelling of 22231744 in words is "twenty-two million, two hundred thirty-one thousand, seven hundred forty-four".