12189712 has 40 divisors (see below), whose sum is σ = 24435936. Its totient is φ = 5888256.

The previous prime is 12189703. The next prime is 12189733. The reversal of 12189712 is 21798121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88908 + ... + 89044.

Almost surely, 2^12189712 is an apocalyptic number.

It is an amenable number.

12189712 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12189712 is a wasteful number, since it uses less digits than its factorization.

12189712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 289 counting only the distinct ones).

The product of its digits is 2016, while the sum is 31.

The square root of 12189712 is about 3491.3768057888. The cubic root of 12189712 is about 230.1430238347.

The spelling of 12189712 in words is "twelve million, one hundred eighty-nine thousand, seven hundred twelve".