856047936 has 56 divisors (see below), whose sum is σ = 2286182880. Its totient is φ = 282675712.

The previous prime is 856047931. The next prime is 856047943. The reversal of 856047936 is 639740658.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856047931) 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, 291 + ... + 41378.

Almost surely, 2^856047936 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 856047936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143091440).

856047936 is an abundant number, since it is smaller than the sum of its proper divisors (1430134944).

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

856047936 is a wasteful number, since it uses less digits than its factorization.

856047936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41791 (or 41781 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 856047936 is about 29258.2968745619. The cubic root of 856047936 is about 949.5096032223.

The spelling of 856047936 in words is "eight hundred fifty-six million, forty-seven thousand, nine hundred thirty-six".