820208 has 10 divisors (see below), whose sum is σ = 1589184. Its totient is φ = 410096.

The previous prime is 820201. The next prime is 820213. The reversal of 820208 is 802028.

It is a self number, because there is not a number n which added to its sum of digits gives 820208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820201) by changing a digit.

820208 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 as a sum of consecutive naturals, namely, 25616 + ... + 25647.

2⁸²⁰²⁰⁸ is an apocalyptic number.

It is an amenable number.

820208 is a deficient number, since it is larger than the sum of its proper divisors (768976).

820208 is a wasteful number, since it uses less digits than its factorization.

820208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51271 (or 51265 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 820208 is about 905.6533553187. The cubic root of 820208 is about 93.6069296255.

It can be divided in two parts, 82020 and 8, that added together give a palindrome (82028).

The spelling of 820208 in words is "eight hundred twenty thousand, two hundred eight".