199741128 has 32 divisors (see below), whose sum is σ = 501547200. Its totient is φ = 66287808.

The previous prime is 199741123. The next prime is 199741141. The reversal of 199741128 is 821147991.

It is a self number, because there is not a number n which added to its sum of digits gives 199741128.

It is not an unprimeable number, because it can be changed into a prime (199741121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12676 + ... + 23667.

It is an arithmetic number, because the mean of its divisors is an integer number (15673350).

Almost surely, 2^199741128 is an apocalyptic number.

It is an amenable number.

199741128 is an abundant number, since it is smaller than the sum of its proper divisors (301806072).

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

199741128 is a wasteful number, since it uses less digits than its factorization.

199741128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36581 (or 36577 counting only the distinct ones).

The product of its digits is 36288, while the sum is 42.

The square root of 199741128 is about 14132.9801528199. The cubic root of 199741128 is about 584.5511232619.

The spelling of 199741128 in words is "one hundred ninety-nine million, seven hundred forty-one thousand, one hundred twenty-eight".