20017708 has 12 divisors (see below), whose sum is σ = 35117152. Its totient is φ = 9984240.

The previous prime is 20017693. The next prime is 20017709. The reversal of 20017708 is 80771002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20017709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260 + ... + 7627.

Almost surely, 2^20017708 is an apocalyptic number.

It is an amenable number.

20017708 is a deficient number, since it is larger than the sum of its proper divisors (15099444).

20017708 is a wasteful number, since it uses less digits than its factorization.

20017708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12312 (or 12310 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 20017708 is about 4474.1153315488. The cubic root of 20017708 is about 271.5218495395.

The spelling of 20017708 in words is "twenty million, seventeen thousand, seven hundred eight".