12188860 has 12 divisors (see below), whose sum is σ = 25596648. Its totient is φ = 4875536.

The previous prime is 12188857. The next prime is 12188863. The reversal of 12188860 is 6888121.

It is an interprime number because it is at equal distance from previous prime (12188857) and next prime (12188863).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12188863) 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, 304702 + ... + 304741.

It is an arithmetic number, because the mean of its divisors is an integer number (2133054).

Almost surely, 2^12188860 is an apocalyptic number.

12188860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12188860 is an abundant number, since it is smaller than the sum of its proper divisors (13407788).

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

12188860 is a wasteful number, since it uses less digits than its factorization.

12188860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609452 (or 609450 counting only the distinct ones).

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

The square root of 12188860 is about 3491.2547887543. The cubic root of 12188860 is about 230.1376617603.

The spelling of 12188860 in words is "twelve million, one hundred eighty-eight thousand, eight hundred sixty".