12081688 has 16 divisors (see below), whose sum is σ = 22770000. Its totient is φ = 6009696.

The previous prime is 12081683. The next prime is 12081703. The reversal of 12081688 is 88618021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (1423125).

Almost surely, 2^12081688 is an apocalyptic number.

It is an amenable number.

12081688 is a deficient number, since it is larger than the sum of its proper divisors (10688312).

12081688 is a wasteful number, since it uses less digits than its factorization.

12081688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7794 (or 7790 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 12081688 is about 3475.8722646265. The cubic root of 12081688 is about 229.4611709141.

It can be divided in two parts, 12081 and 688, that added together give a square (12769 = 113²).

The spelling of 12081688 in words is "twelve million, eighty-one thousand, six hundred eighty-eight".