22112228 has 24 divisors (see below), whose sum is σ = 39463200. Its totient is φ = 10839488.

The previous prime is 22112221. The next prime is 22112249. The reversal of 22112228 is 82221122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63551 + ... + 63897.

It is an arithmetic number, because the mean of its divisors is an integer number (1644300).

Almost surely, 2^22112228 is an apocalyptic number.

It is an amenable number.

22112228 is a deficient number, since it is larger than the sum of its proper divisors (17350972).

22112228 is a wasteful number, since it uses less digits than its factorization.

22112228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 617 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 22112228 is about 4702.3640862868. The cubic root of 22112228 is about 280.6795907209.

The spelling of 22112228 in words is "twenty-two million, one hundred twelve thousand, two hundred twenty-eight".