12856918 has 8 divisors (see below), whose sum is σ = 19950480. Its totient is φ = 6206760.

The previous prime is 12856891. The next prime is 12856933. The reversal of 12856918 is 81965821.

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

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 3 ways as a sum of consecutive naturals, for example, 110778 + ... + 110893.

It is an arithmetic number, because the mean of its divisors is an integer number (2493810).

Almost surely, 2^12856918 is an apocalyptic number.

12856918 is a deficient number, since it is larger than the sum of its proper divisors (7093562).

12856918 is a wasteful number, since it uses less digits than its factorization.

12856918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221702.

The product of its digits is 34560, while the sum is 40.

The square root of 12856918 is about 3585.6544730356. The cubic root of 12856918 is about 234.2676339763.

The spelling of 12856918 in words is "twelve million, eight hundred fifty-six thousand, nine hundred eighteen".