320222304 has 72 divisors (see below), whose sum is σ = 915812352. Its totient is φ = 106133760.

The previous prime is 320222297. The next prime is 320222339. The reversal of 320222304 is 403222023.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49057 + ... + 55199.

It is an arithmetic number, because the mean of its divisors is an integer number (12719616).

Almost surely, 2^320222304 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 320222304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457906176).

320222304 is an abundant number, since it is smaller than the sum of its proper divisors (595590048).

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

320222304 is a wasteful number, since it uses less digits than its factorization.

320222304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 320222304 is about 17894.7563269244. The cubic root of 320222304 is about 684.1487313791.

Adding to 320222304 its reverse (403222023), we get a palindrome (723444327).

The spelling of 320222304 in words is "three hundred twenty million, two hundred twenty-two thousand, three hundred four".