2808066560 has 80 divisors (see below), whose sum is σ = 7250770296. Its totient is φ = 1036812288.

The previous prime is 2808066551. The next prime is 2808066571. The reversal of 2808066560 is 656608082.

It can be written as a sum of positive squares in 4 ways, for example, as 2214267136 + 593799424 = 47056^2 + 24368^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8909 + ... + 75468.

Almost surely, 2^2808066560 is an apocalyptic number.

2808066560 is a gapful number since it is divisible by the number (20) 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 2808066560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3625385148).

2808066560 is an abundant number, since it is smaller than the sum of its proper divisors (4442703736).

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

2808066560 is an equidigital number, since it uses as much as digits as its factorization.

2808066560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84413 (or 84397 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2808066560 is about 52991.1932305737. The cubic root of 2808066560 is about 1410.8119596125.

The spelling of 2808066560 in words is "two billion, eight hundred eight million, sixty-six thousand, five hundred sixty".