8193322728 has 48 divisors (see below), whose sum is σ = 23358160800. Its totient is φ = 2587364640.

The previous prime is 8193322721. The next prime is 8193322741. The reversal of 8193322728 is 8272233918.

It is a super-2 number, since 2×8193322728² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8193322721) 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 11 ways as a sum of consecutive naturals, for example, 2993268 + ... + 2996003.

It is an arithmetic number, because the mean of its divisors is an integer number (486628350).

Almost surely, 2^8193322728 is an apocalyptic number.

It is an amenable number.

8193322728 is an abundant number, since it is smaller than the sum of its proper divisors (15164838072).

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

8193322728 is a wasteful number, since it uses less digits than its factorization.

8193322728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989302 (or 5989295 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8193322728 is about 90516.9748058341. The cubic root of 8193322728 is about 2015.9821722252.

The spelling of 8193322728 in words is "eight billion, one hundred ninety-three million, three hundred twenty-two thousand, seven hundred twenty-eight".