856523922 has 16 divisors (see below), whose sum is σ = 1713692640. Its totient is φ = 285400512.

The previous prime is 856523917. The next prime is 856523947. The reversal of 856523922 is 229325658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8647 + ... + 42282.

It is an arithmetic number, because the mean of its divisors is an integer number (107105790).

Almost surely, 2^856523922 is an apocalyptic number.

856523922 is an abundant number, since it is smaller than the sum of its proper divisors (857168718).

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

856523922 is a wasteful number, since it uses less digits than its factorization.

856523922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53737.

The product of its digits is 259200, while the sum is 42.

The square root of 856523922 is about 29266.4299496881. The cubic root of 856523922 is about 949.6855550270.

The spelling of 856523922 in words is "eight hundred fifty-six million, five hundred twenty-three thousand, nine hundred twenty-two".