860165728 has 72 divisors (see below), whose sum is σ = 1810781784. Its totient is φ = 402124800.

The previous prime is 860165693. The next prime is 860165741. The reversal of 860165728 is 827561068.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2598523 + ... + 2598853.

It is an arithmetic number, because the mean of its divisors is an integer number (25149747).

Almost surely, 2^860165728 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 860165728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905390892).

860165728 is an abundant number, since it is smaller than the sum of its proper divisors (950616056).

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

860165728 is a wasteful number, since it uses less digits than its factorization.

860165728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 860165728 is about 29328.5821000607. The cubic root of 860165728 is about 951.0296234732.

The spelling of 860165728 in words is "eight hundred sixty million, one hundred sixty-five thousand, seven hundred twenty-eight".