12189504 has 28 divisors (see below), whose sum is σ = 32251904. Its totient is φ = 4063104.

The previous prime is 12189503. The next prime is 12189521. The reversal of 12189504 is 40598121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189503) 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, 31552 + ... + 31935.

Almost surely, 2^12189504 is an apocalyptic number.

It is an amenable number.

12189504 is an abundant number, since it is smaller than the sum of its proper divisors (20062400).

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

12189504 is an equidigital number, since it uses as much as digits as its factorization.

12189504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63502 (or 63492 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12189504 is about 3491.3470179860. The cubic root of 12189504 is about 230.1417148067.

The spelling of 12189504 in words is "twelve million, one hundred eighty-nine thousand, five hundred four".