8021705268 has 48 divisors (see below), whose sum is σ = 19199121984. Its totient is φ = 2605244160.

The previous prime is 8021705261. The next prime is 8021705269. The reversal of 8021705268 is 8625071208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021705261) 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, 376846 + ... + 397562.

It is an arithmetic number, because the mean of its divisors is an integer number (399981708).

Almost surely, 2^8021705268 is an apocalyptic number.

It is an amenable number.

8021705268 is an abundant number, since it is smaller than the sum of its proper divisors (11177416716).

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

8021705268 is a wasteful number, since it uses less digits than its factorization.

8021705268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21552 (or 21550 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 8021705268 is about 89563.9730472024. The cubic root of 8021705268 is about 2001.8071389659.

The spelling of 8021705268 in words is "eight billion, twenty-one million, seven hundred five thousand, two hundred sixty-eight".