2787298556 has 72 divisors (see below), whose sum is σ = 6055192080. Its totient is φ = 1116073728.

The previous prime is 2787298523. The next prime is 2787298583. The reversal of 2787298556 is 6558927872.

2787298556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2787298495 and 2787298504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266726 + ... + 276978.

It is an arithmetic number, because the mean of its divisors is an integer number (84099890).

Almost surely, 2^2787298556 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 2787298556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027596040).

2787298556 is an abundant number, since it is smaller than the sum of its proper divisors (3267893524).

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

2787298556 is a wasteful number, since it uses less digits than its factorization.

2787298556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363 (or 10354 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 59.

The square root of 2787298556 is about 52794.8724404179. The cubic root of 2787298556 is about 1407.3253045172.

The spelling of 2787298556 in words is "two billion, seven hundred eighty-seven million, two hundred ninety-eight thousand, five hundred fifty-six".