12189328 has 10 divisors (see below), whose sum is σ = 23616854. Its totient is φ = 6094656.

The previous prime is 12189299. The next prime is 12189337. The reversal of 12189328 is 82398121.

It can be written as a sum of positive squares in only one way, i.e., 7225344 + 4963984 = 2688^2 + 2228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12189293 and 12189302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380901 + ... + 380932.

Almost surely, 2^12189328 is an apocalyptic number.

It is an amenable number.

12189328 is a deficient number, since it is larger than the sum of its proper divisors (11427526).

12189328 is an equidigital number, since it uses as much as digits as its factorization.

12189328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761841 (or 761835 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 12189328 is about 3491.3218127237. The cubic root of 12189328 is about 230.1406071560.

The spelling of 12189328 in words is "twelve million, one hundred eighty-nine thousand, three hundred twenty-eight".