820196 has 12 divisors (see below), whose sum is σ = 1545852. Its totient is φ = 378528.

The previous prime is 820187. The next prime is 820201. The reversal of 820196 is 691028.

It can be written as a sum of positive squares in 2 ways, for example, as 287296 + 532900 = 536^2 + 730^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

820196 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, 7835 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (128821).

2⁸²⁰¹⁹⁶ is an apocalyptic number.

It is an amenable number.

820196 is a deficient number, since it is larger than the sum of its proper divisors (725656).

820196 is a wasteful number, since it uses less digits than its factorization.

820196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15790 (or 15788 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 820196 is about 905.6467302431. The cubic root of 820196 is about 93.6064731199.

The spelling of 820196 in words is "eight hundred twenty thousand, one hundred ninety-six".