6857256 has 96 divisors (see below), whose sum is σ = 21176640. Its totient is φ = 1843968.

The previous prime is 6857219. The next prime is 6857269. The reversal of 6857256 is 6527586.

It is a happy number.

It is a nialpdrome in base 14.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403360 + ... + 403376.

It is an arithmetic number, because the mean of its divisors is an integer number (220590).

Almost surely, 2^6857256 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 6857256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10588320).

6857256 is an abundant number, since it is smaller than the sum of its proper divisors (14319384).

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

6857256 is an equidigital number, since it uses as much as digits as its factorization.

6857256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 29 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 6857256 is about 2618.6362863139. The cubic root of 6857256 is about 189.9838952185.

The spelling of 6857256 in words is "six million, eight hundred fifty-seven thousand, two hundred fifty-six".