2789868 has 24 divisors (see below), whose sum is σ = 6561072. Its totient is φ = 922624.

The previous prime is 2789861. The next prime is 2789881. The reversal of 2789868 is 8689872.

It is a happy number.

2789868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2789861) 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 7 ways as a sum of consecutive naturals, for example, 796 + ... + 2492.

It is an arithmetic number, because the mean of its divisors is an integer number (273378).

2^2789868 is an apocalyptic number.

It is an amenable number.

2789868 is an abundant number, since it is smaller than the sum of its proper divisors (3771204).

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

2789868 is a wasteful number, since it uses less digits than its factorization.

2789868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1839 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 2789868 is about 1670.2897952152. The cubic root of 2789868 is about 140.7757614741.

It can be divided in two parts, 27898 and 68, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 2789868 in words is "two million, seven hundred eighty-nine thousand, eight hundred sixty-eight".