820180852 has 12 divisors (see below), whose sum is σ = 1435825440. Its totient is φ = 409945016.

The previous prime is 820180831. The next prime is 820180901. The reversal of 820180852 is 258081028.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23128 + ... + 46639.

It is an arithmetic number, because the mean of its divisors is an integer number (119652120).

Almost surely, 2^820180852 is an apocalyptic number.

It is an amenable number.

820180852 is a deficient number, since it is larger than the sum of its proper divisors (615644588).

820180852 is a wasteful number, since it uses less digits than its factorization.

820180852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72710 (or 72708 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 820180852 is about 28638.7997653533. The cubic root of 820180852 is about 936.0589685132.

The spelling of 820180852 in words is "eight hundred twenty million, one hundred eighty thousand, eight hundred fifty-two".