20286017 has 2 divisors, whose sum is σ = 20286018. Its totient is φ = 20286016.

The previous prime is 20285989. The next prime is 20286031. The reversal of 20286017 is 71068202.

It is a Cunningham number, because it is equal to 4504²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 1 = 4504^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 20286017 - 2¹⁴ = 20269633 is a prime.

It is not a weakly prime, because it can be changed into another prime (20286517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10143008 + 10143009.

It is an arithmetic number, because the mean of its divisors is an integer number (10143009).

Almost surely, 2^20286017 is an apocalyptic number.

It is an amenable number.

20286017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20286017 is an equidigital number, since it uses as much as digits as its factorization.

20286017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20286017 is about 4504.0001110124. Note that the first 3 decimals coincide. The cubic root of 20286017 is about 272.7295913170.

The spelling of 20286017 in words is "twenty million, two hundred eighty-six thousand, seventeen".