20017027 has 4 divisors (see below), whose sum is σ = 20258280. Its totient is φ = 19775776.

The previous prime is 20017009. The next prime is 20017031. The reversal of 20017027 is 72071002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20017027 - 2¹¹ = 20014979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20016995 and 20017013.

It is not an unprimeable number, because it can be changed into a prime (20017427) 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 in 3 ways as a sum of consecutive naturals, for example, 120502 + ... + 120667.

It is an arithmetic number, because the mean of its divisors is an integer number (5064570).

Almost surely, 2^20017027 is an apocalyptic number.

20017027 is a deficient number, since it is larger than the sum of its proper divisors (241253).

20017027 is an equidigital number, since it uses as much as digits as its factorization.

20017027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241252.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20017027 is about 4474.0392264709. The cubic root of 20017027 is about 271.5187704577.

Adding to 20017027 its reverse (72071002), we get a palindrome (92088029).

The spelling of 20017027 in words is "twenty million, seventeen thousand, twenty-seven".