2806873 has 4 divisors (see below), whose sum is σ = 2815540. Its totient is φ = 2798208.

The previous prime is 2806861. The next prime is 2806907. The reversal of 2806873 is 3786082.

It is a happy number.

2806873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 2271049 = 732^2 + 1507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2806873 - 2⁹ = 2806361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806073) 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, 3828 + ... + 4501.

It is an arithmetic number, because the mean of its divisors is an integer number (703885).

2^2806873 is an apocalyptic number.

It is an amenable number.

2806873 is a deficient number, since it is larger than the sum of its proper divisors (8667).

2806873 is an equidigital number, since it uses as much as digits as its factorization.

2806873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2806873 is about 1675.3724958946. The cubic root of 2806873 is about 141.0612044200.

The spelling of 2806873 in words is "two million, eight hundred six thousand, eight hundred seventy-three".