808305128 has 32 divisors (see below), whose sum is σ = 1536796800. Its totient is φ = 398512128.

The previous prime is 808305097. The next prime is 808305131. The reversal of 808305128 is 821503808.

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 7 ways as a sum of consecutive naturals, for example, 509825 + ... + 511407.

It is an arithmetic number, because the mean of its divisors is an integer number (48024900).

Almost surely, 2^808305128 is an apocalyptic number.

It is an amenable number.

808305128 is a deficient number, since it is larger than the sum of its proper divisors (728491672).

808305128 is a wasteful number, since it uses less digits than its factorization.

808305128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 808305128 is about 28430.7074832829. The cubic root of 808305128 is about 931.5191297096.

It can be divided in two parts, 80830 and 5128, that added together give a palindrome (85958).

The spelling of 808305128 in words is "eight hundred eight million, three hundred five thousand, one hundred twenty-eight".