8271321320 has 32 divisors (see below), whose sum is σ = 19006444800. Its totient is φ = 3238133568.

The previous prime is 8271321301. The next prime is 8271321323. The reversal of 8271321320 is 231231728.

It is not an unprimeable number, because it can be changed into a prime (8271321323) 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, 2197940 + ... + 2201699.

It is an arithmetic number, because the mean of its divisors is an integer number (593951400).

Almost surely, 2^8271321320 is an apocalyptic number.

It is an amenable number.

8271321320 is an abundant number, since it is smaller than the sum of its proper divisors (10735123480).

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

8271321320 is a wasteful number, since it uses less digits than its factorization.

8271321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399697 (or 4399693 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 8271321320 is about 90946.8048916508. The cubic root of 8271321320 is about 2022.3592113231.

The spelling of 8271321320 in words is "eight billion, two hundred seventy-one million, three hundred twenty-one thousand, three hundred twenty".