2808812864 has 224 divisors, whose sum is σ = 7143292800. Its totient is φ = 1076060160.

The previous prime is 2808812849. The next prime is 2808812917. The reversal of 2808812864 is 4682188082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5042474 + ... + 5043030.

It is an arithmetic number, because the mean of its divisors is an integer number (31889700).

Almost surely, 2^2808812864 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 2808812864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3571646400).

2808812864 is an abundant number, since it is smaller than the sum of its proper divisors (4334479936).

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

2808812864 is a wasteful number, since it uses less digits than its factorization.

2808812864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The square root of 2808812864 is about 52998.2345366334. The cubic root of 2808812864 is about 1410.9369330683.

The spelling of 2808812864 in words is "two billion, eight hundred eight million, eight hundred twelve thousand, eight hundred sixty-four".