22743212 has 24 divisors (see below), whose sum is σ = 43505280. Its totient is φ = 10356480.

The previous prime is 22743199. The next prime is 22743239. The reversal of 22743212 is 21234722.

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 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 7502.

It is an arithmetic number, because the mean of its divisors is an integer number (1812720).

Almost surely, 2^22743212 is an apocalyptic number.

It is an amenable number.

22743212 is a deficient number, since it is larger than the sum of its proper divisors (20762068).

22743212 is a wasteful number, since it uses less digits than its factorization.

22743212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841 (or 10839 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 22743212 is about 4768.9843782508. The cubic root of 22743212 is about 283.3243709583.

Adding to 22743212 its reverse (21234722), we get a palindrome (43977934).

The spelling of 22743212 in words is "twenty-two million, seven hundred forty-three thousand, two hundred twelve".