2820503 has 8 divisors (see below), whose sum is σ = 3242880. Its totient is φ = 2403000.

The previous prime is 2820491. The next prime is 2820509. The reversal of 2820503 is 3050282.

2820503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2820503 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 (2820509) 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 7 ways as a sum of consecutive naturals, for example, 128 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (405360).

2^2820503 is an apocalyptic number.

2820503 is a deficient number, since it is larger than the sum of its proper divisors (422377).

2820503 is a wasteful number, since it uses less digits than its factorization.

2820503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2820503 is about 1679.4353217674. The cubic root of 2820503 is about 141.2891639646.

Adding to 2820503 its reverse (3050282), we get a palindrome (5870785).

The spelling of 2820503 in words is "two million, eight hundred twenty thousand, five hundred three".