12928188 has 48 divisors (see below), whose sum is σ = 37130240. Its totient is φ = 3409344.

The previous prime is 12928187. The next prime is 12928193. The reversal of 12928188 is 88182921.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928183) 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 15 ways as a sum of consecutive naturals, for example, 4828 + ... + 7011.

Almost surely, 2^12928188 is an apocalyptic number.

It is an amenable number.

12928188 is an abundant number, since it is smaller than the sum of its proper divisors (24202052).

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

12928188 is a wasteful number, since it uses less digits than its factorization.

12928188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11866 (or 11864 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 12928188 is about 3595.5789519909. The cubic root of 12928188 is about 234.6997100006.

The spelling of 12928188 in words is "twelve million, nine hundred twenty-eight thousand, one hundred eighty-eight".