28339307 has 2 divisors, whose sum is σ = 28339308. Its totient is φ = 28339306.

The previous prime is 28339273. The next prime is 28339309. The reversal of 28339307 is 70393382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28339307 - 2¹⁰ = 28338283 is a prime.

Together with 28339309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28339309) 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 as a sum of consecutive naturals, namely, 14169653 + 14169654.

It is an arithmetic number, because the mean of its divisors is an integer number (14169654).

Almost surely, 2^28339307 is an apocalyptic number.

28339307 is a deficient number, since it is larger than the sum of its proper divisors (1).

28339307 is an equidigital number, since it uses as much as digits as its factorization.

28339307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 28339307 is about 5323.4675729265. The cubic root of 28339307 is about 304.8805659758.

The spelling of 28339307 in words is "twenty-eight million, three hundred thirty-nine thousand, three hundred seven".