12105688 has 16 divisors (see below), whose sum is σ = 25940880. Its totient is φ = 5188128.

The previous prime is 12105647. The next prime is 12105733. The reversal of 12105688 is 88650121.

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, 108031 + ... + 108142.

It is an arithmetic number, because the mean of its divisors is an integer number (1621305).

Almost surely, 2^12105688 is an apocalyptic number.

It is an amenable number.

12105688 is an abundant number, since it is smaller than the sum of its proper divisors (13835192).

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

12105688 is a wasteful number, since it uses less digits than its factorization.

12105688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216186 (or 216182 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 12105688 is about 3479.3229226388. The cubic root of 12105688 is about 229.6130102256.

It can be divided in two parts, 1210568 and 8, that multiplied together give a square (9684544 = 3112²).

The spelling of 12105688 in words is "twelve million, one hundred five thousand, six hundred eighty-eight".