168804172 has 6 divisors (see below), whose sum is σ = 295407308. Its totient is φ = 84402084.

The previous prime is 168804161. The next prime is 168804179. The reversal of 168804172 is 271408861.

168804172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (168804179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100518 + ... + 21100525.

Almost surely, 2^168804172 is an apocalyptic number.

It is an amenable number.

168804172 is a deficient number, since it is larger than the sum of its proper divisors (126603136).

168804172 is a wasteful number, since it uses less digits than its factorization.

168804172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42201047 (or 42201045 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 168804172 is about 12992.4659707078. The cubic root of 168804172 is about 552.6638507228.

The spelling of 168804172 in words is "one hundred sixty-eight million, eight hundred four thousand, one hundred seventy-two".