8306221280 has 72 divisors (see below), whose sum is σ = 22827297528. Its totient is φ = 2847844608.

The previous prime is 8306221237. The next prime is 8306221307. The reversal of 8306221280 is 821226038.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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, 521894 + ... + 537573.

It is an arithmetic number, because the mean of its divisors is an integer number (317045799).

Almost surely, 2^8306221280 is an apocalyptic number.

8306221280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8306221280 is an abundant number, since it is smaller than the sum of its proper divisors (14521076248).

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

8306221280 is a wasteful number, since it uses less digits than its factorization.

8306221280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059496 (or 1059481 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 8306221280 is about 91138.4731054893. The cubic root of 8306221280 is about 2025.1995966445.

The spelling of 8306221280 in words is "eight billion, three hundred six million, two hundred twenty-one thousand, two hundred eighty".