821473304 has 16 divisors (see below), whose sum is σ = 1541617920. Its totient is φ = 410375200.

The previous prime is 821473291. The next prime is 821473361. The reversal of 821473304 is 403374128.

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, 35399 + ... + 53814.

It is an arithmetic number, because the mean of its divisors is an integer number (96351120).

Almost surely, 2^821473304 is an apocalyptic number.

It is an amenable number.

821473304 is a deficient number, since it is larger than the sum of its proper divisors (720144616).

821473304 is a wasteful number, since it uses less digits than its factorization.

821473304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90370 (or 90366 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 821473304 is about 28661.3555855267. The cubic root of 821473304 is about 936.5503952352.

It can be divided in two parts, 8214 and 73304, that added together give a palindrome (81518).

The spelling of 821473304 in words is "eight hundred twenty-one million, four hundred seventy-three thousand, three hundred four".