28569017 has 2 divisors, whose sum is σ = 28569018. Its totient is φ = 28569016.

The previous prime is 28568987. The next prime is 28569041. The reversal of 28569017 is 71096582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 3728761 = 4984^2 + 1931^2 .

It is a cyclic number.

It is not a de Polignac number, because 28569017 - 2¹⁴ = 28552633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28569077) 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, 14284508 + 14284509.

It is an arithmetic number, because the mean of its divisors is an integer number (14284509).

Almost surely, 2^28569017 is an apocalyptic number.

It is an amenable number.

28569017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28569017 is an equidigital number, since it uses as much as digits as its factorization.

28569017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 28569017 is about 5344.9992516370. Note that the first 3 decimals coincide. The cubic root of 28569017 is about 305.7021073201.

The spelling of 28569017 in words is "twenty-eight million, five hundred sixty-nine thousand, seventeen".