8280330640 has 80 divisors (see below), whose sum is σ = 20410122240. Its totient is φ = 3118625280.

The previous prime is 8280330637. The next prime is 8280330683. The reversal of 8280330640 is 460330828.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 8280330596 and 8280330605.

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 15 ways as a sum of consecutive naturals, for example, 46641 + ... + 136879.

It is an arithmetic number, because the mean of its divisors is an integer number (255126528).

Almost surely, 2^8280330640 is an apocalyptic number.

8280330640 is a gapful number since it is divisible by the number (80) 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 8280330640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10205061120).

8280330640 is an abundant number, since it is smaller than the sum of its proper divisors (12129791600).

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

8280330640 is a wasteful number, since it uses less digits than its factorization.

8280330640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90320 (or 90314 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 8280330640 is about 90996.3221234793. The cubic root of 8280330640 is about 2023.0932121490.

The spelling of 8280330640 in words is "eight billion, two hundred eighty million, three hundred thirty thousand, six hundred forty".