199826 has 16 divisors (see below), whose sum is σ = 338688. Its totient is φ = 87600.

The previous prime is 199819. The next prime is 199831. The reversal of 199826 is 628991.

199826 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

199826 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 828.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2¹⁹⁹⁸²⁶ is an apocalyptic number.

199826 is a deficient number, since it is larger than the sum of its proper divisors (138862).

199826 is a wasteful number, since it uses less digits than its factorization.

199826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its digits is 7776, while the sum is 35.

The square root of 199826 is about 447.0190152555. The cubic root of 199826 is about 58.4633905408.

The spelling of 199826 in words is "one hundred ninety-nine thousand, eight hundred twenty-six".