321936804 has 108 divisors (see below), whose sum is σ = 948648064. Its totient is φ = 90176544.

The previous prime is 321936781. The next prime is 321936869. The reversal of 321936804 is 408639123.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 35 ways as a sum of consecutive naturals, for example, 877029 + ... + 877395.

Almost surely, 2^321936804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321936804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474324032).

321936804 is an abundant number, since it is smaller than the sum of its proper divisors (626711260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321936804 is a wasteful number, since it uses less digits than its factorization.

321936804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 321936804 is about 17942.5974708234. The cubic root of 321936804 is about 685.3675573716.

The spelling of 321936804 in words is "three hundred twenty-one million, nine hundred thirty-six thousand, eight hundred four".