820382 has 8 divisors (see below), whose sum is σ = 1295400. Its totient is φ = 388584.

The previous prime is 820367. The next prime is 820399. The reversal of 820382 is 283028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

820382 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, 10757 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (161925).

2⁸²⁰³⁸² is an apocalyptic number.

820382 is a deficient number, since it is larger than the sum of its proper divisors (475018).

820382 is a wasteful number, since it uses less digits than its factorization.

820382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21610.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 820382 is about 905.7494134693. The cubic root of 820382 is about 93.6135484564.

The spelling of 820382 in words is "eight hundred twenty thousand, three hundred eighty-two".