2783878 has 8 divisors (see below), whose sum is σ = 4254768. Its totient is φ = 1365624.

The previous prime is 2783873. The next prime is 2783887. The reversal of 2783878 is 8783872.

2783878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13026 + ... + 13237.

It is an arithmetic number, because the mean of its divisors is an integer number (531846).

2^2783878 is an apocalyptic number.

2783878 is a deficient number, since it is larger than the sum of its proper divisors (1470890).

2783878 is a wasteful number, since it uses less digits than its factorization.

2783878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26318.

The product of its digits is 150528, while the sum is 43.

The square root of 2783878 is about 1668.4957296919. The cubic root of 2783878 is about 140.6749381818.

The spelling of 2783878 in words is "two million, seven hundred eighty-three thousand, eight hundred seventy-eight".