20730303 has 32 divisors (see below), whose sum is σ = 33761280. Its totient is φ = 12467520.

The previous prime is 20730277. The next prime is 20730313. The reversal of 20730303 is 30303702.

It is not a de Polignac number, because 20730303 - 2⁵ = 20730271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66075 + ... + 66387.

It is an arithmetic number, because the mean of its divisors is an integer number (1055040).

Almost surely, 2^20730303 is an apocalyptic number.

20730303 is a deficient number, since it is larger than the sum of its proper divisors (13030977).

20730303 is a wasteful number, since it uses less digits than its factorization.

20730303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 18.

The square root of 20730303 is about 4553.0542496219. The cubic root of 20730303 is about 274.7062560432.

The spelling of 20730303 in words is "twenty million, seven hundred thirty thousand, three hundred three".