820446808 has 16 divisors (see below), whose sum is σ = 1547777880. Its totient is φ = 407706048.

The previous prime is 820446793. The next prime is 820446811. The reversal of 820446808 is 808644028.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 313285 + ... + 315892.

Almost surely, 2^820446808 is an apocalyptic number.

It is an amenable number.

820446808 is a deficient number, since it is larger than the sum of its proper divisors (727331072).

820446808 is a wasteful number, since it uses less digits than its factorization.

820446808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629346 (or 629342 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 820446808 is about 28643.4426701819. The cubic root of 820446808 is about 936.1601346542.

The spelling of 820446808 in words is "eight hundred twenty million, four hundred forty-six thousand, eight hundred eight".