12078188 has 12 divisors (see below), whose sum is σ = 21277872. Its totient is φ = 5998800.

The previous prime is 12078173. The next prime is 12078193. The reversal of 12078188 is 88187021.

It is an unprimeable number.

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, 9395 + ... + 10602.

It is an arithmetic number, because the mean of its divisors is an integer number (1773156).

Almost surely, 2^12078188 is an apocalyptic number.

It is an amenable number.

12078188 is a deficient number, since it is larger than the sum of its proper divisors (9199684).

12078188 is a wasteful number, since it uses less digits than its factorization.

12078188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152 (or 20150 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 12078188 is about 3475.3687574127. The cubic root of 12078188 is about 229.4390108852.

The spelling of 12078188 in words is "twelve million, seventy-eight thousand, one hundred eighty-eight".