20206017 has 40 divisors (see below), whose sum is σ = 33608960. Its totient is φ = 12013920.

The previous prime is 20206009. The next prime is 20206019. The reversal of 20206017 is 71060202.

It is a happy number.

It is not a de Polignac number, because 20206017 - 2³ = 20206009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20206019) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32334 + ... + 32952.

It is an arithmetic number, because the mean of its divisors is an integer number (840224).

Almost surely, 2^20206017 is an apocalyptic number.

20206017 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20206017 is a deficient number, since it is larger than the sum of its proper divisors (13402943).

20206017 is a wasteful number, since it uses less digits than its factorization.

20206017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20206017 is about 4495.1103434732. The cubic root of 20206017 is about 272.3706065821.

Adding to 20206017 its reverse (71060202), we get a palindrome (91266219).

The spelling of 20206017 in words is "twenty million, two hundred six thousand, seventeen".