22228768 has 12 divisors (see below), whose sum is σ = 43762950. Its totient is φ = 11114368.

The previous prime is 22228747. The next prime is 22228777. The reversal of 22228768 is 86782222.

It can be written as a sum of positive squares in only one way, i.e., 22165264 + 63504 = 4708^2 + 252^2 .

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 as a sum of consecutive naturals, namely, 347293 + ... + 347356.

Almost surely, 2^22228768 is an apocalyptic number.

It is an amenable number.

22228768 is a deficient number, since it is larger than the sum of its proper divisors (21534182).

22228768 is an equidigital number, since it uses as much as digits as its factorization.

22228768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694659 (or 694651 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 22228768 is about 4714.7394413690. The cubic root of 22228768 is about 281.1718236713.

The spelling of 22228768 in words is "twenty-two million, two hundred twenty-eight thousand, seven hundred sixty-eight".