2781916704 has 192 divisors, whose sum is σ = 9401575680. Its totient is φ = 783820800.

The previous prime is 2781916667. The next prime is 2781916717. The reversal of 2781916704 is 4076191872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2781916704.

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 31 ways as a sum of consecutive naturals, for example, 438354 + ... + 444654.

It is an arithmetic number, because the mean of its divisors is an integer number (48966540).

Almost surely, 2^2781916704 is an apocalyptic number.

2781916704 is a gapful number since it is divisible by the number (24) 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 2781916704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4700787840).

2781916704 is an abundant number, since it is smaller than the sum of its proper divisors (6619658976).

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

2781916704 is a wasteful number, since it uses less digits than its factorization.

2781916704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6386 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 2781916704 is about 52743.8783556917. The cubic root of 2781916704 is about 1406.4189434716.

The spelling of 2781916704 in words is "two billion, seven hundred eighty-one million, nine hundred sixteen thousand, seven hundred four".