12871287 has 48 divisors (see below), whose sum is σ = 22303008. Its totient is φ = 7050240.

The previous prime is 12871259. The next prime is 12871291. The reversal of 12871287 is 78217821.

It is a happy number.

It is not a de Polignac number, because 12871287 - 2⁸ = 12871031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871207) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 93883 + ... + 94019.

It is an arithmetic number, because the mean of its divisors is an integer number (464646).

Almost surely, 2^12871287 is an apocalyptic number.

12871287 is a deficient number, since it is larger than the sum of its proper divisors (9431721).

12871287 is a wasteful number, since it uses less digits than its factorization.

12871287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 237 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 12871287 is about 3587.6575923574. The cubic root of 12871287 is about 234.3548746453.

The spelling of 12871287 in words is "twelve million, eight hundred seventy-one thousand, two hundred eighty-seven".