12856534 has 16 divisors (see below), whose sum is σ = 20003760. Its totient is φ = 6192640.

The previous prime is 12856523. The next prime is 12856549. The reversal of 12856534 is 43565821.

It is a self number, because there is not a number n which added to its sum of digits gives 12856534.

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, 5862 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (1250235).

Almost surely, 2^12856534 is an apocalyptic number.

12856534 is a deficient number, since it is larger than the sum of its proper divisors (7147226).

12856534 is a wasteful number, since it uses less digits than its factorization.

12856534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015.

The product of its digits is 28800, while the sum is 34.

The square root of 12856534 is about 3585.6009259258. The cubic root of 12856534 is about 234.2653016478.

The spelling of 12856534 in words is "twelve million, eight hundred fifty-six thousand, five hundred thirty-four".