320433252 has 48 divisors (see below), whose sum is σ = 789734400. Its totient is φ = 100841760.

The previous prime is 320433199. The next prime is 320433287. The reversal of 320433252 is 252334023.

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 15 ways as a sum of consecutive naturals, for example, 68649 + ... + 73167.

It is an arithmetic number, because the mean of its divisors is an integer number (16452800).

Almost surely, 2^320433252 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 320433252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394867200).

320433252 is an abundant number, since it is smaller than the sum of its proper divisors (469301148).

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

320433252 is a wasteful number, since it uses less digits than its factorization.

320433252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856 (or 4854 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 320433252 is about 17900.6494854237. The cubic root of 320433252 is about 684.2989271712.

Adding to 320433252 its reverse (252334023), we get a palindrome (572767275).

The spelling of 320433252 in words is "three hundred twenty million, four hundred thirty-three thousand, two hundred fifty-two".