804943820 has 12 divisors (see below), whose sum is σ = 1690382064. Its totient is φ = 321977520.

The previous prime is 804943819. The next prime is 804943831. The reversal of 804943820 is 28349408.

It is a super-3 number, since 3×804943820³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20123576 + ... + 20123615.

It is an arithmetic number, because the mean of its divisors is an integer number (140865172).

Almost surely, 2^804943820 is an apocalyptic number.

It is an amenable number.

804943820 is an abundant number, since it is smaller than the sum of its proper divisors (885438244).

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

804943820 is a wasteful number, since it uses less digits than its factorization.

804943820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40247200 (or 40247198 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 804943820 is about 28371.5318585374. The cubic root of 804943820 is about 930.2261060441.

The spelling of 804943820 in words is "eight hundred four million, nine hundred forty-three thousand, eight hundred twenty".