12187668 has 24 divisors (see below), whose sum is σ = 28975968. Its totient is φ = 3985696.

The previous prime is 12187667. The next prime is 12187687. The reversal of 12187668 is 86678121.

12187668 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8946 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (1207332).

Almost surely, 2^12187668 is an apocalyptic number.

It is an amenable number.

12187668 is an abundant number, since it is smaller than the sum of its proper divisors (16788300).

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

12187668 is a wasteful number, since it uses less digits than its factorization.

12187668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19223 (or 19221 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 12187668 is about 3491.0840723191. The cubic root of 12187668 is about 230.1301594718.

The spelling of 12187668 in words is "twelve million, one hundred eighty-seven thousand, six hundred sixty-eight".