856331136 has 64 divisors (see below), whose sum is σ = 2527376400. Its totient is φ = 285442560.

The previous prime is 856331107. The next prime is 856331137. The reversal of 856331136 is 631133658.

It is a happy number.

856331136 is a `hidden beast` number, since 8 + 5 + 633 + 1 + 13 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 856331136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856331137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120435 + ... + 127346.

Almost surely, 2^856331136 is an apocalyptic number.

It is an amenable number.

856331136 is an abundant number, since it is smaller than the sum of its proper divisors (1671045264).

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

856331136 is a wasteful number, since it uses less digits than its factorization.

856331136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247804 (or 247786 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 856331136 is about 29263.1361272164. The cubic root of 856331136 is about 949.6142980884.

The spelling of 856331136 in words is "eight hundred fifty-six million, three hundred thirty-one thousand, one hundred thirty-six".