28268267 has 2 divisors, whose sum is σ = 28268268. Its totient is φ = 28268266.

The previous prime is 28268237. The next prime is 28268287. The reversal of 28268267 is 76286282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28268267 - 2²⁰ = 27219691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28268237) 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, 14134133 + 14134134.

It is an arithmetic number, because the mean of its divisors is an integer number (14134134).

Almost surely, 2^28268267 is an apocalyptic number.

28268267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28268267 is an equidigital number, since it uses as much as digits as its factorization.

28268267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 28268267 is about 5316.7910434773. The cubic root of 28268267 is about 304.6255981035.

The spelling of 28268267 in words is "twenty-eight million, two hundred sixty-eight thousand, two hundred sixty-seven".