12189604 has 12 divisors (see below), whose sum is σ = 24379264. Its totient is φ = 5224104.

The previous prime is 12189581. The next prime is 12189607. The reversal of 12189604 is 40698121.

It is a happy number.

12189604 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12189607) 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, 217644 + ... + 217699.

Almost surely, 2^12189604 is an apocalyptic number.

12189604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12189604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12189604 is a wasteful number, since it uses less digits than its factorization.

12189604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435354 (or 435352 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12189604 is about 3491.3613390768. The cubic root of 12189604 is about 230.1423441489.

The spelling of 12189604 in words is "twelve million, one hundred eighty-nine thousand, six hundred four".