199868028 has 48 divisors (see below), whose sum is σ = 472657920. Its totient is φ = 65729664.

The previous prime is 199868027. The next prime is 199868033. The reversal of 199868028 is 820868991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199868027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476803 + ... + 477221.

It is an arithmetic number, because the mean of its divisors is an integer number (9847040).

Almost surely, 2^199868028 is an apocalyptic number.

It is an amenable number.

199868028 is an abundant number, since it is smaller than the sum of its proper divisors (272789892).

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

199868028 is a wasteful number, since it uses less digits than its factorization.

199868028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 199868028 is about 14137.4689389579. The cubic root of 199868028 is about 584.6748898501.

The spelling of 199868028 in words is "one hundred ninety-nine million, eight hundred sixty-eight thousand, twenty-eight".