2805303 has 16 divisors (see below), whose sum is σ = 3891200. Its totient is φ = 1796256.

The previous prime is 2805263. The next prime is 2805311. The reversal of 2805303 is 3035082.

It is not a de Polignac number, because 2805303 - 2¹⁸ = 2543159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2805303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13998 + ... + 14196.

It is an arithmetic number, because the mean of its divisors is an integer number (243200).

2^2805303 is an apocalyptic number.

2805303 is a deficient number, since it is larger than the sum of its proper divisors (1085897).

2805303 is a wasteful number, since it uses less digits than its factorization.

2805303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2805303 is about 1674.9038778390. The cubic root of 2805303 is about 141.0348990622.

The spelling of 2805303 in words is "two million, eight hundred five thousand, three hundred three".