12289328 has 20 divisors (see below), whose sum is σ = 24455280. Its totient is φ = 5978304.

The previous prime is 12289327. The next prime is 12289339. The reversal of 12289328 is 82398221.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12289327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9788 + ... + 10971.

It is an arithmetic number, because the mean of its divisors is an integer number (1222764).

Almost surely, 2^12289328 is an apocalyptic number.

It is an amenable number.

12289328 is a deficient number, since it is larger than the sum of its proper divisors (12165952).

12289328 is a wasteful number, since it uses less digits than its factorization.

12289328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20804 (or 20798 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 12289328 is about 3505.6137836333. The cubic root of 12289328 is about 230.7682439160.

The spelling of 12289328 in words is "twelve million, two hundred eighty-nine thousand, three hundred twenty-eight".