2791878 has 16 divisors (see below), whose sum is σ = 5826816. Its totient is φ = 890120.

The previous prime is 2791849. The next prime is 2791897. The reversal of 2791878 is 8781972.

2791878 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 an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9978 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (364176).

2^2791878 is an apocalyptic number.

2791878 is an abundant number, since it is smaller than the sum of its proper divisors (3034938).

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

2791878 is a wasteful number, since it uses less digits than its factorization.

2791878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20259.

The product of its digits is 56448, while the sum is 42.

The square root of 2791878 is about 1670.8913788754. The cubic root of 2791878 is about 140.8095613234.

The spelling of 2791878 in words is "two million, seven hundred ninety-one thousand, eight hundred seventy-eight".