28286171 has 2 divisors, whose sum is σ = 28286172. Its totient is φ = 28286170.

The previous prime is 28286143. The next prime is 28286183. The reversal of 28286171 is 17168282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28286171 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28286771) 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, 14143085 + 14143086.

It is an arithmetic number, because the mean of its divisors is an integer number (14143086).

Almost surely, 2^28286171 is an apocalyptic number.

28286171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28286171 is an equidigital number, since it uses as much as digits as its factorization.

28286171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 35.

The square root of 28286171 is about 5318.4744993278. The cubic root of 28286171 is about 304.6898971242.

The spelling of 28286171 in words is "twenty-eight million, two hundred eighty-six thousand, one hundred seventy-one".