28668303 has 16 divisors (see below), whose sum is σ = 43620960. Its totient is φ = 18595008.

The previous prime is 28668293. The next prime is 28668313. The reversal of 28668303 is 30386682.

It is an interprime number because it is at equal distance from previous prime (28668293) and next prime (28668313).

It is not a de Polignac number, because 28668303 - 2⁴ = 28668287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13350 + ... + 15347.

It is an arithmetic number, because the mean of its divisors is an integer number (2726310).

Almost surely, 2^28668303 is an apocalyptic number.

28668303 is a deficient number, since it is larger than the sum of its proper divisors (14952657).

28668303 is a wasteful number, since it uses less digits than its factorization.

28668303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28743 (or 28737 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28668303 is about 5354.2789430511. The cubic root of 28668303 is about 306.0558337180.

The spelling of 28668303 in words is "twenty-eight million, six hundred sixty-eight thousand, three hundred three".