12806171 has 16 divisors (see below), whose sum is σ = 15628800. Its totient is φ = 10248768.

The previous prime is 12806161. The next prime is 12806173. The reversal of 12806171 is 17160821.

It is a cyclic number.

It is not a de Polignac number, because 12806171 - 2¹⁰ = 12805147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12806171.

It is not an unprimeable number, because it can be changed into a prime (12806173) 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 15 ways as a sum of consecutive naturals, for example, 9050 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (976800).

Almost surely, 2^12806171 is an apocalyptic number.

12806171 is a deficient number, since it is larger than the sum of its proper divisors (2822629).

12806171 is a wasteful number, since it uses less digits than its factorization.

12806171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 12806171 is about 3578.5710835472. The cubic root of 12806171 is about 233.9590049206.

Adding to 12806171 its reverse (17160821), we get a palindrome (29966992).

The spelling of 12806171 in words is "twelve million, eight hundred six thousand, one hundred seventy-one".