20117168 has 10 divisors (see below), whose sum is σ = 38977044. Its totient is φ = 10058576.

The previous prime is 20117161. The next prime is 20117173. The reversal of 20117168 is 86171102.

It is not an unprimeable number, because it can be changed into a prime (20117161) 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 as a sum of consecutive naturals, namely, 628646 + ... + 628677.

Almost surely, 2^20117168 is an apocalyptic number.

It is an amenable number.

20117168 is a deficient number, since it is larger than the sum of its proper divisors (18859876).

20117168 is a wasteful number, since it uses less digits than its factorization.

20117168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257331 (or 1257325 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 20117168 is about 4485.2166056948. The cubic root of 20117168 is about 271.9708013640.

The spelling of 20117168 in words is "twenty million, one hundred seventeen thousand, one hundred sixty-eight".