28805267 has 2 divisors, whose sum is σ = 28805268. Its totient is φ = 28805266.

The previous prime is 28805239. The next prime is 28805281. The reversal of 28805267 is 76250882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28805267 - 2¹⁶ = 28739731 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28805267.

It is not a weakly prime, because it can be changed into another prime (28805467) 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, 14402633 + 14402634.

It is an arithmetic number, because the mean of its divisors is an integer number (14402634).

Almost surely, 2^28805267 is an apocalyptic number.

28805267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28805267 is an equidigital number, since it uses as much as digits as its factorization.

28805267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28805267 is about 5367.0538473170. The cubic root of 28805267 is about 306.5424577063.

The spelling of 28805267 in words is "twenty-eight million, eight hundred five thousand, two hundred sixty-seven".