856622304 has 120 divisors (see below), whose sum is σ = 2629020240. Its totient is φ = 273106944.

The previous prime is 856622293. The next prime is 856622323. The reversal of 856622304 is 403226658.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52432 + ... + 66800.

It is an arithmetic number, because the mean of its divisors is an integer number (21908502).

Almost surely, 2^856622304 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 856622304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314510120).

856622304 is an abundant number, since it is smaller than the sum of its proper divisors (1772397936).

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

856622304 is a wasteful number, since it uses less digits than its factorization.

856622304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414 (or 14397 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 856622304 is about 29268.1107008977. The cubic root of 856622304 is about 949.7219145436.

The spelling of 856622304 in words is "eight hundred fifty-six million, six hundred twenty-two thousand, three hundred four".