12228288 has 28 divisors (see below), whose sum is σ = 32354520. Its totient is φ = 4076032.

The previous prime is 12228269. The next prime is 12228289. The reversal of 12228288 is 88282221.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12228289) by changing a digit.

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, 31653 + ... + 32036.

Almost surely, 2^12228288 is an apocalyptic number.

It is an amenable number.

12228288 is an abundant number, since it is smaller than the sum of its proper divisors (20126232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12228288 is an equidigital number, since it uses as much as digits as its factorization.

12228288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63704 (or 63694 counting only the distinct ones).

The product of its digits is 8192, while the sum is 33.

The square root of 12228288 is about 3496.8969101190. The cubic root of 12228288 is about 230.3855411451.

The spelling of 12228288 in words is "twelve million, two hundred twenty-eight thousand, two hundred eighty-eight".