12871864 has 16 divisors (see below), whose sum is σ = 24203520. Its totient is φ = 6417600.

The previous prime is 12871849. The next prime is 12871877. The reversal of 12871864 is 46817821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (1512720).

Almost surely, 2^12871864 is an apocalyptic number.

It is an amenable number.

12871864 is a deficient number, since it is larger than the sum of its proper divisors (11331656).

12871864 is a wasteful number, since it uses less digits than its factorization.

12871864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590 (or 4586 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 12871864 is about 3587.7380060422. The cubic root of 12871864 is about 234.3583765158.

The spelling of 12871864 in words is "twelve million, eight hundred seventy-one thousand, eight hundred sixty-four".