12856234 has 4 divisors (see below), whose sum is σ = 19284354. Its totient is φ = 6428116.

The previous prime is 12856231. The next prime is 12856237. The reversal of 12856234 is 43265821.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12856231) and next prime (12856237).

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 585225 = 3503^2 + 765^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12856196 and 12856205.

It is not an unprimeable number, because it can be changed into a prime (12856231) 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 as a sum of consecutive naturals, namely, 3214057 + ... + 3214060.

Almost surely, 2^12856234 is an apocalyptic number.

12856234 is a deficient number, since it is larger than the sum of its proper divisors (6428120).

12856234 is an equidigital number, since it uses as much as digits as its factorization.

12856234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428119.

The product of its digits is 11520, while the sum is 31.

The square root of 12856234 is about 3585.5590916899. The cubic root of 12856234 is about 234.2634794839.

The spelling of 12856234 in words is "twelve million, eight hundred fifty-six thousand, two hundred thirty-four".