12128188 has 6 divisors (see below), whose sum is σ = 21224336. Its totient is φ = 6064092.

The previous prime is 12128183. The next prime is 12128189. The reversal of 12128188 is 88182121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516020 + ... + 1516027.

Almost surely, 2^12128188 is an apocalyptic number.

It is an amenable number.

12128188 is a deficient number, since it is larger than the sum of its proper divisors (9096148).

12128188 is a wasteful number, since it uses less digits than its factorization.

12128188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032051 (or 3032049 counting only the distinct ones).

The product of its digits is 2048, while the sum is 31.

The square root of 12128188 is about 3482.5548093318. The cubic root of 12128188 is about 229.7551774253.

The spelling of 12128188 in words is "twelve million, one hundred twenty-eight thousand, one hundred eighty-eight".