12856338 has 48 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 3759840.

The previous prime is 12856321. The next prime is 12856339. The reversal of 12856338 is 83365821.

12856338 = 677² + 678² + ... + 703².

12856338 is a `hidden beast` number, since 12 + 8 + 5 + 633 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12856339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4623 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^12856338 is an apocalyptic number.

12856338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12856338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15724800).

12856338 is an abundant number, since it is smaller than the sum of its proper divisors (18593262).

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

12856338 is a wasteful number, since it uses less digits than its factorization.

12856338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 2284 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 12856338 is about 3585.5735942803. The cubic root of 12856338 is about 234.2641111706.

The spelling of 12856338 in words is "twelve million, eight hundred fifty-six thousand, three hundred thirty-eight".