12871386 has 80 divisors (see below), whose sum is σ = 32617728. Its totient is φ = 3758400.

The previous prime is 12871367. The next prime is 12871387. The reversal of 12871386 is 68317821.

12871386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12871386.

It is not an unprimeable number, because it can be changed into a prime (12871387) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55126 + ... + 55358.

Almost surely, 2^12871386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12871386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16308864).

12871386 is an abundant number, since it is smaller than the sum of its proper divisors (19746342).

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

12871386 is a wasteful number, since it uses less digits than its factorization.

12871386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 280 counting only the distinct ones).

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

The square root of 12871386 is about 3587.6713896342. The cubic root of 12871386 is about 234.3554754936.

The spelling of 12871386 in words is "twelve million, eight hundred seventy-one thousand, three hundred eighty-six".