8306722688 has 128 divisors (see below), whose sum is σ = 18956332800. Its totient is φ = 3588935680.

The previous prime is 8306722687. The next prime is 8306722717. The reversal of 8306722688 is 8862276038.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8306722687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5796020 + ... + 5797452.

It is an arithmetic number, because the mean of its divisors is an integer number (148096350).

Almost surely, 2^8306722688 is an apocalyptic number.

8306722688 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8306722688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9478166400).

8306722688 is an abundant number, since it is smaller than the sum of its proper divisors (10649610112).

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

8306722688 is a wasteful number, since it uses less digits than its factorization.

8306722688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 8306722688 is about 91141.2238671393. The cubic root of 8306722688 is about 2025.2403464557.

The spelling of 8306722688 in words is "eight billion, three hundred six million, seven hundred twenty-two thousand, six hundred eighty-eight".