28718267 has 2 divisors, whose sum is σ = 28718268. Its totient is φ = 28718266.

The previous prime is 28718243. The next prime is 28718303. The reversal of 28718267 is 76281782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28718267 - 2¹⁸ = 28456123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28718227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14359133 + 14359134.

It is an arithmetic number, because the mean of its divisors is an integer number (14359134).

Almost surely, 2^28718267 is an apocalyptic number.

28718267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28718267 is an equidigital number, since it uses as much as digits as its factorization.

28718267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 41.

The square root of 28718267 is about 5358.9427128866. The cubic root of 28718267 is about 306.2335316981.

The spelling of 28718267 in words is "twenty-eight million, seven hundred eighteen thousand, two hundred sixty-seven".