8081730208 has 48 divisors (see below), whose sum is σ = 16477723080. Its totient is φ = 3897220096.

The previous prime is 8081730203. The next prime is 8081730227. The reversal of 8081730208 is 8020371808.

It can be written as a sum of positive squares in 4 ways, for example, as 5179968784 + 2901761424 = 71972^2 + 53868^2 .

It is not an unprimeable number, because it can be changed into a prime (8081730203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935766 + ... + 944362.

Almost surely, 2^8081730208 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 8081730208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8238861540).

8081730208 is an abundant number, since it is smaller than the sum of its proper divisors (8395992872).

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

8081730208 is a wasteful number, since it uses less digits than its factorization.

8081730208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9649 (or 9641 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 8081730208 is about 89898.4438574996. The cubic root of 8081730208 is about 2006.7877875748.

The spelling of 8081730208 in words is "eight billion, eighty-one million, seven hundred thirty thousand, two hundred eight".