856904328 has 96 divisors (see below), whose sum is σ = 2657640960. Its totient is φ = 244339200.

The previous prime is 856904317. The next prime is 856904369. The reversal of 856904328 is 823409658.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304528 + ... + 307328.

It is an arithmetic number, because the mean of its divisors is an integer number (27683760).

Almost surely, 2^856904328 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 856904328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328820480).

856904328 is an abundant number, since it is smaller than the sum of its proper divisors (1800736632).

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

856904328 is a wasteful number, since it uses less digits than its factorization.

856904328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427 (or 3420 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 856904328 is about 29272.9282443694. The cubic root of 856904328 is about 949.8261281055.

The spelling of 856904328 in words is "eight hundred fifty-six million, nine hundred four thousand, three hundred twenty-eight".