168870172 has 12 divisors (see below), whose sum is σ = 296133040. Its totient is φ = 84260736.

The previous prime is 168870133. The next prime is 168870179. The reversal of 168870172 is 271078861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168870179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41397 + ... + 45292.

Almost surely, 2^168870172 is an apocalyptic number.

It is an amenable number.

168870172 is a deficient number, since it is larger than the sum of its proper divisors (127262868).

168870172 is a wasteful number, since it uses less digits than its factorization.

168870172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87180 (or 87178 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 168870172 is about 12995.0056560203. The cubic root of 168870172 is about 552.7358692061.

The spelling of 168870172 in words is "one hundred sixty-eight million, eight hundred seventy thousand, one hundred seventy-two".