12983856 has 40 divisors (see below), whose sum is σ = 33956160. Its totient is φ = 4274496.

The previous prime is 12983849. The next prime is 12983857. The reversal of 12983856 is 65838921.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12983857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2355 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (848904).

Almost surely, 2^12983856 is an apocalyptic number.

12983856 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 12983856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16978080).

12983856 is an abundant number, since it is smaller than the sum of its proper divisors (20972304).

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

12983856 is a wasteful number, since it uses less digits than its factorization.

12983856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3347 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 12983856 is about 3603.3118099881. The cubic root of 12983856 is about 235.0360952554.

The spelling of 12983856 in words is "twelve million, nine hundred eighty-three thousand, eight hundred fifty-six".