12428188 has 12 divisors (see below), whose sum is σ = 22695120. Its totient is φ = 5943872.

The previous prime is 12428137. The next prime is 12428191. The reversal of 12428188 is 88182421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67453 + ... + 67636.

It is an arithmetic number, because the mean of its divisors is an integer number (1891260).

Almost surely, 2^12428188 is an apocalyptic number.

It is an amenable number.

12428188 is a deficient number, since it is larger than the sum of its proper divisors (10266932).

12428188 is a wasteful number, since it uses less digits than its factorization.

12428188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135116 (or 135114 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 12428188 is about 3525.3635273543. The cubic root of 12428188 is about 231.6341588418.

The spelling of 12428188 in words is "twelve million, four hundred twenty-eight thousand, one hundred eighty-eight".