6393856 has 52 divisors (see below), whose sum is σ = 14678272. Its totient is φ = 2727936.

The previous prime is 6393847. The next prime is 6393857. The reversal of 6393856 is 6583936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6393857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28561 + ... + 28783.

Almost surely, 2^6393856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6393856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7339136).

6393856 is an abundant number, since it is smaller than the sum of its proper divisors (8284416).

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

6393856 is an equidigital number, since it uses as much as digits as its factorization.

6393856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 232 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 6393856 is about 2528.6075219377. The cubic root of 6393856 is about 185.6041219853.

The spelling of 6393856 in words is "six million, three hundred ninety-three thousand, eight hundred fifty-six".