7999883280 has 120 divisors (see below), whose sum is σ = 26883236952. Its totient is φ = 2131955712.

The previous prime is 7999883261. The next prime is 7999883293. The reversal of 7999883280 is 823889997.

It can be written as a sum of positive squares in 4 ways, for example, as 1080305424 + 6919577856 = 32868^2 + 83184^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1737942 + ... + 1742538.

Almost surely, 2^7999883280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7999883280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13441618476).

7999883280 is an abundant number, since it is smaller than the sum of its proper divisors (18883353672).

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

7999883280 is a wasteful number, since it uses less digits than its factorization.

7999883280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033 (or 7024 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The square root of 7999883280 is about 89442.0666129758. The cubic root of 7999883280 is about 1999.9902732860.

The spelling of 7999883280 in words is "seven billion, nine hundred ninety-nine million, eight hundred eighty-three thousand, two hundred eighty".