821934304 has 24 divisors (see below), whose sum is σ = 1618859088. Its totient is φ = 410795520.

The previous prime is 821934299. The next prime is 821934349. The reversal of 821934304 is 403439128.

It is a self number, because there is not a number n which added to its sum of digits gives 821934304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111864 + ... + 118984.

It is an arithmetic number, because the mean of its divisors is an integer number (67452462).

Almost surely, 2^821934304 is an apocalyptic number.

It is an amenable number.

821934304 is a deficient number, since it is larger than the sum of its proper divisors (796924784).

821934304 is a wasteful number, since it uses less digits than its factorization.

821934304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738 (or 10730 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 821934304 is about 28669.3966452034. The cubic root of 821934304 is about 936.7255557228.

The spelling of 821934304 in words is "eight hundred twenty-one million, nine hundred thirty-four thousand, three hundred four".