820036 has 12 divisors (see below), whose sum is σ = 1640128. Its totient is φ = 351432.

The previous prime is 819991. The next prime is 820037. The reversal of 820036 is 630028.

820036 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 819995 and 820022.

It is not an unprimeable number, because it can be changed into a prime (820037) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14616 + ... + 14671.

2⁸²⁰⁰³⁶ is an apocalyptic number.

It is an amenable number.

820036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820036 is a wasteful number, since it uses less digits than its factorization.

820036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29298 (or 29296 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 820036 is about 905.5583912703. The cubic root of 820036 is about 93.6003859531.

The spelling of 820036 in words is "eight hundred twenty thousand, thirty-six".