856336 has 40 divisors (see below), whose sum is σ = 1874880. Its totient is φ = 375936.

The previous prime is 856333. The next prime is 856343. The reversal of 856336 is 633658.

It is a super-2 number, since 2×856336² = 1466622689792, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 856298 and 856307.

It is not an unprimeable number, because it can be changed into a prime (856333) 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, 4695 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (46872).

2⁸⁵⁶³³⁶ 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 856336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937440).

856336 is an abundant number, since it is smaller than the sum of its proper divisors (1018544).

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

856336 is a wasteful number, since it uses less digits than its factorization.

856336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 217 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 856336 is about 925.3842445168. The cubic root of 856336 is about 94.9616096036.

The spelling of 856336 in words is "eight hundred fifty-six thousand, three hundred thirty-six".