12855918 has 16 divisors (see below), whose sum is σ = 25827840. Its totient is φ = 4265976.

The previous prime is 12855901. The next prime is 12855929. The reversal of 12855918 is 81955821.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3358 + ... + 6081.

It is an arithmetic number, because the mean of its divisors is an integer number (1614240).

Almost surely, 2^12855918 is an apocalyptic number.

12855918 is an abundant number, since it is smaller than the sum of its proper divisors (12971922).

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

12855918 is a wasteful number, since it uses less digits than its factorization.

12855918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671.

The product of its digits is 28800, while the sum is 39.

The square root of 12855918 is about 3585.5150257669. The cubic root of 12855918 is about 234.2615601072.

The spelling of 12855918 in words is "twelve million, eight hundred fifty-five thousand, nine hundred eighteen".