28008347 has 2 divisors, whose sum is σ = 28008348. Its totient is φ = 28008346.

The previous prime is 28008317. The next prime is 28008359. The reversal of 28008347 is 74380082.

28008347 is nontrivially palindromic in base 14.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28008347 - 2⁸ = 28008091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28008307) 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, 14004173 + 14004174.

It is an arithmetic number, because the mean of its divisors is an integer number (14004174).

Almost surely, 2^28008347 is an apocalyptic number.

28008347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28008347 is an equidigital number, since it uses as much as digits as its factorization.

28008347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28008347 is about 5292.2912807214. The cubic root of 28008347 is about 303.6890684851.

The spelling of 28008347 in words is "twenty-eight million, eight thousand, three hundred forty-seven".