20068168 has 8 divisors (see below), whose sum is σ = 37627830. Its totient is φ = 10034080.

The previous prime is 20068163. The next prime is 20068183. The reversal of 20068168 is 86186002.

It can be written as a sum of positive squares in only one way, i.e., 18818244 + 1249924 = 4338^2 + 1118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20068163) 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 as a sum of consecutive naturals, namely, 1254253 + ... + 1254268.

Almost surely, 2^20068168 is an apocalyptic number.

It is an amenable number.

20068168 is a deficient number, since it is larger than the sum of its proper divisors (17559662).

20068168 is a wasteful number, since it uses less digits than its factorization.

20068168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508527 (or 2508523 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 20068168 is about 4479.7508859310. The cubic root of 20068168 is about 271.7498059782.

The spelling of 20068168 in words is "twenty million, sixty-eight thousand, one hundred sixty-eight".