12163856 has 10 divisors (see below), whose sum is σ = 23567502. Its totient is φ = 6081920.

The previous prime is 12163843. The next prime is 12163937. The reversal of 12163856 is 65836121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12138256 + 25600 = 3484^2 + 160^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 380105 + ... + 380136.

Almost surely, 2^12163856 is an apocalyptic number.

12163856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12163856 is a deficient number, since it is larger than the sum of its proper divisors (11403646).

12163856 is an equidigital number, since it uses as much as digits as its factorization.

12163856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760249 (or 760243 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 12163856 is about 3487.6720029269. The cubic root of 12163856 is about 229.9801873293.

Adding to 12163856 its reverse (65836121), we get a palindrome (77999977).

The spelling of 12163856 in words is "twelve million, one hundred sixty-three thousand, eight hundred fifty-six".