12478256 has 40 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 5221440.

The previous prime is 12478243. The next prime is 12478261. The reversal of 12478256 is 65287421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3521 + ... + 6111.

Almost surely, 2^12478256 is an apocalyptic number.

12478256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12478256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14141952).

12478256 is an abundant number, since it is smaller than the sum of its proper divisors (15805648).

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

12478256 is a wasteful number, since it uses less digits than its factorization.

12478256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649 (or 2643 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 12478256 is about 3532.4575015136. The cubic root of 12478256 is about 231.9447946332.

The spelling of 12478256 in words is "twelve million, four hundred seventy-eight thousand, two hundred fifty-six".