12388256 has 24 divisors (see below), whose sum is σ = 24637284. Its totient is φ = 6131200.

The previous prime is 12388253. The next prime is 12388261. The reversal of 12388256 is 65288321.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 250000 = 3484^2 + 500^2 .

It is not an unprimeable number, because it can be changed into a prime (12388253) 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, 1316 + ... + 5148.

Almost surely, 2^12388256 is an apocalyptic number.

12388256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12388256 is a deficient number, since it is larger than the sum of its proper divisors (12249028).

12388256 is a wasteful number, since it uses less digits than its factorization.

12388256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944 (or 3936 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 12388256 is about 3519.6954413699. The cubic root of 12388256 is about 231.3858110443.

The spelling of 12388256 in words is "twelve million, three hundred eighty-eight thousand, two hundred fifty-six".