28670303 has 2 divisors, whose sum is σ = 28670304. Its totient is φ = 28670302.

The previous prime is 28670287. The next prime is 28670311. The reversal of 28670303 is 30307682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28670303 - 2⁴ = 28670287 is a prime.

It is a super-2 number, since 2×28670303² = 1643972548223618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28670333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335151 + 14335152.

It is an arithmetic number, because the mean of its divisors is an integer number (14335152).

Almost surely, 2^28670303 is an apocalyptic number.

28670303 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670303 is an equidigital number, since it uses as much as digits as its factorization.

28670303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 28670303 is about 5354.4657063053. The cubic root of 28670303 is about 306.0629507237.

Adding to 28670303 its reverse (30307682), we get a palindrome (58977985).

The spelling of 28670303 in words is "twenty-eight million, six hundred seventy thousand, three hundred three".