168006172 has 12 divisors (see below), whose sum is σ = 311305680. Its totient is φ = 79061696.

The previous prime is 168006109. The next prime is 168006173. The reversal of 168006172 is 271600861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168006173) 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, 1235272 + ... + 1235407.

It is an arithmetic number, because the mean of its divisors is an integer number (25942140).

Almost surely, 2^168006172 is an apocalyptic number.

It is an amenable number.

168006172 is a deficient number, since it is larger than the sum of its proper divisors (143299508).

168006172 is a wasteful number, since it uses less digits than its factorization.

168006172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470700 (or 2470698 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 168006172 is about 12961.7194846980. The cubic root of 168006172 is about 551.7915923681.

The spelling of 168006172 in words is "one hundred sixty-eight million, six thousand, one hundred seventy-two".