320345922 has 48 divisors (see below), whose sum is σ = 696325248. Its totient is φ = 98205120.

The previous prime is 320345917. The next prime is 320345923. The reversal of 320345922 is 229543023.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 320345922.

It is not an unprimeable number, because it can be changed into a prime (320345923) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 436668 + ... + 437400.

It is an arithmetic number, because the mean of its divisors is an integer number (14506776).

Almost surely, 2^320345922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320345922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348162624).

320345922 is an abundant number, since it is smaller than the sum of its proper divisors (375979326).

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

320345922 is a wasteful number, since it uses less digits than its factorization.

320345922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 320345922 is about 17898.2100222341. The cubic root of 320345922 is about 684.2367558717.

Adding to 320345922 its reverse (229543023), we get a palindrome (549888945).

The spelling of 320345922 in words is "three hundred twenty million, three hundred forty-five thousand, nine hundred twenty-two".