2783868 has 24 divisors (see below), whose sum is σ = 6556368. Its totient is φ = 919296.

The previous prime is 2783849. The next prime is 2783873. The reversal of 2783868 is 8683872.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 330 + ... + 2382.

It is an arithmetic number, because the mean of its divisors is an integer number (273182).

2^2783868 is an apocalyptic number.

It is an amenable number.

2783868 is an abundant number, since it is smaller than the sum of its proper divisors (3772500).

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

2783868 is a wasteful number, since it uses less digits than its factorization.

2783868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2171 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 2783868 is about 1668.4927329779. The cubic root of 2783868 is about 140.6747697415.

The spelling of 2783868 in words is "two million, seven hundred eighty-three thousand, eight hundred sixty-eight".