2788778872 has 64 divisors (see below), whose sum is σ = 6099999840. Its totient is φ = 1181184000.

The previous prime is 2788778851. The next prime is 2788778873.

2788778872 is nontrivially palindromic in base 10.

2788778872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788778873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141868 + ... + 160324.

Almost surely, 2^2788778872 is an apocalyptic number.

2788778872 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 2788778872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3049999920).

2788778872 is an abundant number, since it is smaller than the sum of its proper divisors (3311220968).

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

2788778872 is a wasteful number, since it uses less digits than its factorization.

2788778872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18592 (or 18588 counting only the distinct ones).

The product of its digits is 39337984, while the sum is 64.

The square root of 2788778872 is about 52808.8900849090. The cubic root of 2788778872 is about 1407.5744008406.

The spelling of 2788778872 in words is "two billion, seven hundred eighty-eight million, seven hundred seventy-eight thousand, eight hundred seventy-two".