2805073 has 4 divisors (see below), whose sum is σ = 2832948. Its totient is φ = 2777200.

The previous prime is 2805071. The next prime is 2805091. The reversal of 2805073 is 3705082.

2805073 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 2331729 + 473344 = 1527^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805073 - 2¹ = 2805071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805071) 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, 13786 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (708237).

2^2805073 is an apocalyptic number.

It is an amenable number.

2805073 is a deficient number, since it is larger than the sum of its proper divisors (27875).

2805073 is a wasteful number, since it uses less digits than its factorization.

2805073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27874.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2805073 is about 1674.8352157750. The cubic root of 2805073 is about 141.0310445869.

Subtracting 2805073 from its reverse (3705082), we obtain a palindrome (900009).

The spelling of 2805073 in words is "two million, eight hundred five thousand, seventy-three".