12782256 has 20 divisors (see below), whose sum is σ = 33020952. Its totient is φ = 4260736.

The previous prime is 12782251. The next prime is 12782267. The reversal of 12782256 is 65228721.

It is not an unprimeable number, because it can be changed into a prime (12782251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133101 + ... + 133196.

Almost surely, 2^12782256 is an apocalyptic number.

12782256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12782256 is an abundant number, since it is smaller than the sum of its proper divisors (20238696).

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

12782256 is a wasteful number, since it uses less digits than its factorization.

12782256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266308 (or 266302 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 12782256 is about 3575.2281046109. The cubic root of 12782256 is about 233.8132778823.

The spelling of 12782256 in words is "twelve million, seven hundred eighty-two thousand, two hundred fifty-six".