820908204 has 48 divisors (see below), whose sum is σ = 1975712256. Its totient is φ = 265144000.

The previous prime is 820908181. The next prime is 820908239. The reversal of 820908204 is 402809028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49759 + ... + 64169.

It is an arithmetic number, because the mean of its divisors is an integer number (41160672).

Almost surely, 2^820908204 is an apocalyptic number.

It is an amenable number.

820908204 is an abundant number, since it is smaller than the sum of its proper divisors (1154804052).

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

820908204 is a wasteful number, since it uses less digits than its factorization.

820908204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14566 (or 14564 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 820908204 is about 28651.4956677658. The cubic root of 820908204 is about 936.3355917313.

The spelling of 820908204 in words is "eight hundred twenty million, nine hundred eight thousand, two hundred four".