2819868 has 12 divisors (see below), whose sum is σ = 6579720. Its totient is φ = 939952.

The previous prime is 2819867. The next prime is 2819899. The reversal of 2819868 is 8689182.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2819867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117483 + ... + 117506.

It is an arithmetic number, because the mean of its divisors is an integer number (548310).

2^2819868 is an apocalyptic number.

It is an amenable number.

2819868 is an abundant number, since it is smaller than the sum of its proper divisors (3759852).

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

2819868 is a wasteful number, since it uses less digits than its factorization.

2819868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234996 (or 234994 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 2819868 is about 1679.2462594867. The cubic root of 2819868 is about 141.2785600223.

The spelling of 2819868 in words is "two million, eight hundred nineteen thousand, eight hundred sixty-eight".