12871855 has 8 divisors (see below), whose sum is σ = 15465600. Its totient is φ = 10284576.

The previous prime is 12871849. The next prime is 12871877. The reversal of 12871855 is 55817821.

12871855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12871855 - 2¹¹ = 12869807 is a prime.

It is a super-2 number, since 2×12871855² = 331369302282050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6301 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (1933200).

Almost surely, 2^12871855 is an apocalyptic number.

12871855 is a deficient number, since it is larger than the sum of its proper divisors (2593745).

12871855 is a wasteful number, since it uses less digits than its factorization.

12871855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233.

The product of its digits is 22400, while the sum is 37.

The square root of 12871855 is about 3587.7367517698. The cubic root of 12871855 is about 234.3583218947.

The spelling of 12871855 in words is "twelve million, eight hundred seventy-one thousand, eight hundred fifty-five".