12388328 has 8 divisors (see below), whose sum is σ = 23228130. Its totient is φ = 6194160.

The previous prime is 12388309. The next prime is 12388339. The reversal of 12388328 is 82388321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10640644 + 1747684 = 3262^2 + 1322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774263 + ... + 774278.

Almost surely, 2^12388328 is an apocalyptic number.

It is an amenable number.

12388328 is a deficient number, since it is larger than the sum of its proper divisors (10839802).

12388328 is a wasteful number, since it uses less digits than its factorization.

12388328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548547 (or 1548543 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 12388328 is about 3519.7056695127. The cubic root of 12388328 is about 231.3862593115.

The spelling of 12388328 in words is "twelve million, three hundred eighty-eight thousand, three hundred twenty-eight".