2808530220 has 192 divisors, whose sum is σ = 8811694080. Its totient is φ = 664215552.

The previous prime is 2808530189. The next prime is 2808530269. The reversal of 2808530220 is 220358082.

2808530220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6065709 + ... + 6066171.

It is an arithmetic number, because the mean of its divisors is an integer number (45894240).

Almost surely, 2^2808530220 is an apocalyptic number.

2808530220 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 2808530220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4405847040).

2808530220 is an abundant number, since it is smaller than the sum of its proper divisors (6003163860).

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

2808530220 is a wasteful number, since it uses less digits than its factorization.

2808530220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2808530220 is about 52995.5679278937. The cubic root of 2808530220 is about 1410.8896050979.

It can be divided in two parts, 2808 and 530220, that added together give a triangular number (533028 = T₁₀₃₂).

The spelling of 2808530220 in words is "two billion, eight hundred eight million, five hundred thirty thousand, two hundred twenty".