199828 has 6 divisors (see below), whose sum is σ = 349706. Its totient is φ = 99912.

The previous prime is 199819. The next prime is 199831. The reversal of 199828 is 828991.

It can be written as a sum of positive squares in only one way, i.e., 150544 + 49284 = 388^2 + 222^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24975 + ... + 24982.

2¹⁹⁹⁸²⁸ is an apocalyptic number.

It is an amenable number.

199828 is a deficient number, since it is larger than the sum of its proper divisors (149878).

199828 is a wasteful number, since it uses less digits than its factorization.

199828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49961 (or 49959 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 199828 is about 447.0212522912. The cubic root of 199828 is about 58.4635855878.

The spelling of 199828 in words is "one hundred ninety-nine thousand, eight hundred twenty-eight".