856504360 has 64 divisors (see below), whose sum is σ = 2019790080. Its totient is φ = 326261760.

The previous prime is 856504351. The next prime is 856504361. The reversal of 856504360 is 63405658.

It is not an unprimeable number, because it can be changed into a prime (856504361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219789 + ... + 223651.

It is an arithmetic number, because the mean of its divisors is an integer number (31559220).

Almost surely, 2^856504360 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 856504360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009895040).

856504360 is an abundant number, since it is smaller than the sum of its proper divisors (1163285720).

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

856504360 is a wasteful number, since it uses less digits than its factorization.

856504360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138 (or 4134 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 856504360 is about 29266.0957423432. The cubic root of 856504360 is about 949.6783250712.

The spelling of 856504360 in words is "eight hundred fifty-six million, five hundred four thousand, three hundred sixty".