12189828 has 36 divisors (see below), whose sum is σ = 33088272. Its totient is φ = 3482640.

The previous prime is 12189817. The next prime is 12189847. The reversal of 12189828 is 82898121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9778 + ... + 10953.

Almost surely, 2^12189828 is an apocalyptic number.

It is an amenable number.

12189828 is an abundant number, since it is smaller than the sum of its proper divisors (20898444).

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

12189828 is a wasteful number, since it uses less digits than its factorization.

12189828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20752 (or 20743 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 12189828 is about 3491.3934181069. The cubic root of 12189828 is about 230.1437538630.

The spelling of 12189828 in words is "twelve million, one hundred eighty-nine thousand, eight hundred twenty-eight".