12163878 has 16 divisors (see below), whose sum is σ = 27030960. Its totient is φ = 4054608.

The previous prime is 12163843. The next prime is 12163937. The reversal of 12163878 is 87836121.

12163878 is a `hidden beast` number, since 12 + 1 + 638 + 7 + 8 = 666.

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

It is a Curzon number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 112575 + ... + 112682.

It is an arithmetic number, because the mean of its divisors is an integer number (1689435).

Almost surely, 2^12163878 is an apocalyptic number.

12163878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12163878 is an abundant number, since it is smaller than the sum of its proper divisors (14867082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12163878 is a wasteful number, since it uses less digits than its factorization.

12163878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225268 (or 225262 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 12163878 is about 3487.6751568918. The cubic root of 12163878 is about 229.9803259794.

Adding to 12163878 its reverse (87836121), we get a palindrome (99999999).

It can be divided in two parts, 12163 and 878, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12163878 in words is "twelve million, one hundred sixty-three thousand, eight hundred seventy-eight".