2804789 has 4 divisors (see below), whose sum is σ = 3020556. Its totient is φ = 2589024.

The previous prime is 2804759. The next prime is 2804807. The reversal of 2804789 is 9874082.

2804789 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, and also an emirpimes, since its reverse is a distinct semiprime: 9874082 = 2 ⋅4937041.

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 1500625 = 1142^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2804789 - 2²⁰ = 1756213 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 (2804729) 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, 107864 + ... + 107889.

It is an arithmetic number, because the mean of its divisors is an integer number (755139).

2^2804789 is an apocalyptic number.

It is an amenable number.

2804789 is a deficient number, since it is larger than the sum of its proper divisors (215767).

2804789 is a wasteful number, since it uses less digits than its factorization.

2804789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215766.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2804789 is about 1674.7504291685. The cubic root of 2804789 is about 141.0262848571.

It can be divided in two parts, 2804 and 789, that multiplied together give a triangular number (2212356 = T₂₁₀₃).

The spelling of 2804789 in words is "two million, eight hundred four thousand, seven hundred eighty-nine".