199628173 has 8 divisors (see below), whose sum is σ = 204703416. Its totient is φ = 194611200.

The previous prime is 199628171. The next prime is 199628179. The reversal of 199628173 is 371826991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 310249 + 199317924 = 557^2 + 14118^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199628173 - 2¹ = 199628171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199628171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7588 + ... + 21373.

It is an arithmetic number, because the mean of its divisors is an integer number (25587927).

Almost surely, 2^199628173 is an apocalyptic number.

It is an amenable number.

199628173 is a deficient number, since it is larger than the sum of its proper divisors (5075243).

199628173 is a wasteful number, since it uses less digits than its factorization.

199628173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29135.

The product of its digits is 163296, while the sum is 46.

The square root of 199628173 is about 14128.9834383086. The cubic root of 199628173 is about 584.4409132397.

The spelling of 199628173 in words is "one hundred ninety-nine million, six hundred twenty-eight thousand, one hundred seventy-three".