2788558872 has 128 divisors (see below), whose sum is σ = 8063539200. Its totient is φ = 795571200.

The previous prime is 2788558859. The next prime is 2788558891.

2788558872 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298204 + ... + 307412.

It is an arithmetic number, because the mean of its divisors is an integer number (62996400).

Almost surely, 2^2788558872 is an apocalyptic number.

2788558872 is a gapful number since it is divisible by the number (22) 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 2788558872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4031769600).

2788558872 is an abundant number, since it is smaller than the sum of its proper divisors (5274980328).

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

2788558872 is a wasteful number, since it uses less digits than its factorization.

2788558872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297 (or 9293 counting only the distinct ones).

The product of its digits is 20070400, while the sum is 60.

The square root of 2788558872 is about 52806.8070612113. The cubic root of 2788558872 is about 1407.5373864907.

The spelling of 2788558872 in words is "two billion, seven hundred eighty-eight million, five hundred fifty-eight thousand, eight hundred seventy-two".