2808770688 has 128 divisors (see below), whose sum is σ = 8334705600. Its totient is φ = 931184640.

The previous prime is 2808770659. The next prime is 2808770693. The reversal of 2808770688 is 8860778082.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 664903 + ... + 669113.

Almost surely, 2^2808770688 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 2808770688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4167352800).

2808770688 is an abundant number, since it is smaller than the sum of its proper divisors (5525934912).

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

2808770688 is a wasteful number, since it uses less digits than its factorization.

2808770688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4409 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The square root of 2808770688 is about 52997.8366350929. The cubic root of 2808770688 is about 1410.9298710132.

The spelling of 2808770688 in words is "two billion, eight hundred eight million, seven hundred seventy thousand, six hundred eighty-eight".