12228188 has 24 divisors (see below), whose sum is σ = 24804864. Its totient is φ = 5166000.

The previous prime is 12228187. The next prime is 12228197. The reversal of 12228188 is 88182221.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228187) 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, 1088 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (1033536).

Almost surely, 2^12228188 is an apocalyptic number.

It is an amenable number.

12228188 is an abundant number, since it is smaller than the sum of its proper divisors (12576676).

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

12228188 is a wasteful number, since it uses less digits than its factorization.

12228188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233 (or 6231 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 12228188 is about 3496.8826116986. The cubic root of 12228188 is about 230.3849131309.

The spelling of 12228188 in words is "twelve million, two hundred twenty-eight thousand, one hundred eighty-eight".