168173404 has 24 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 71754096.

The previous prime is 168173393. The next prime is 168173429. The reversal of 168173404 is 404371861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 168173404.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 6874 + ... + 19585.

It is an arithmetic number, because the mean of its divisors is an integer number (14076720).

Almost surely, 2^168173404 is an apocalyptic number.

168173404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

168173404 is an abundant number, since it is smaller than the sum of its proper divisors (169667876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168173404 is a wasteful number, since it uses less digits than its factorization.

168173404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26697 (or 26695 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 168173404 is about 12968.1688761367. The cubic root of 168173404 is about 551.9746146346.

The spelling of 168173404 in words is "one hundred sixty-eight million, one hundred seventy-three thousand, four hundred four".