199128 has 16 divisors (see below), whose sum is σ = 497880. Its totient is φ = 66368.

The previous prime is 199109. The next prime is 199151. The reversal of 199128 is 821991.

It is a junction number, because it is equal to n+sod(n) for n = 199095 and 199104.

It is a congruent number.

It is an unprimeable number.

199128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125 + ... + 4172.

2¹⁹⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

199128 is an abundant number, since it is smaller than the sum of its proper divisors (298752).

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

199128 is a wasteful number, since it uses less digits than its factorization.

199128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306 (or 8302 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 199128 is about 446.2376048699. The cubic root of 199128 is about 58.3952394944.

The spelling of 199128 in words is "one hundred ninety-nine thousand, one hundred twenty-eight".