856338824 has 32 divisors (see below), whose sum is σ = 1854640800. Its totient is φ = 366347520.

The previous prime is 856338799. The next prime is 856338853. The reversal of 856338824 is 428833658.

It is a happy number.

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, 284714 + ... + 287705.

It is an arithmetic number, because the mean of its divisors is an integer number (57957525).

Almost surely, 2^856338824 is an apocalyptic number.

It is an amenable number.

856338824 is an abundant number, since it is smaller than the sum of its proper divisors (998301976).

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

856338824 is a wasteful number, since it uses less digits than its factorization.

856338824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572453 (or 572449 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The square root of 856338824 is about 29263.2674867316. The cubic root of 856338824 is about 949.6171399069.

The spelling of 856338824 in words is "eight hundred fifty-six million, three hundred thirty-eight thousand, eight hundred twenty-four".