12856218 has 32 divisors (see below), whose sum is σ = 27302400. Its totient is φ = 4027056.

The previous prime is 12856211. The next prime is 12856219. The reversal of 12856218 is 81265821.

It is not an unprimeable number, because it can be changed into a prime (12856211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7353 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (853200).

Almost surely, 2^12856218 is an apocalyptic number.

12856218 is an abundant number, since it is smaller than the sum of its proper divisors (14446182).

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

12856218 is a wasteful number, since it uses less digits than its factorization.

12856218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666.

The product of its digits is 7680, while the sum is 33.

The square root of 12856218 is about 3585.5568605169. The cubic root of 12856218 is about 234.2633823010.

It can be divided in two parts, 1285 and 6218, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 12856218 in words is "twelve million, eight hundred fifty-six thousand, two hundred eighteen".