821485304 has 16 divisors (see below), whose sum is σ = 1546899120. Its totient is φ = 408978880.

The previous prime is 821485289. The next prime is 821485321. The reversal of 821485304 is 403584128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218492 + ... + 222219.

It is an arithmetic number, because the mean of its divisors is an integer number (96681195).

Almost surely, 2^821485304 is an apocalyptic number.

It is an amenable number.

821485304 is a deficient number, since it is larger than the sum of its proper divisors (725413816).

821485304 is a wasteful number, since it uses less digits than its factorization.

821485304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440950 (or 440946 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 821485304 is about 28661.5649258724. The cubic root of 821485304 is about 936.5549555579.

The spelling of 821485304 in words is "eight hundred twenty-one million, four hundred eighty-five thousand, three hundred four".