320233320 has 192 divisors, whose sum is σ = 1143979200. Its totient is φ = 77045760.

The previous prime is 320233313. The next prime is 320233349. The reversal of 320233320 is 23332023.

320233320 is a `hidden beast` number, since 320 + 23 + 3 + 320 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 320233293 and 320233302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 764071 + ... + 764489.

It is an arithmetic number, because the mean of its divisors is an integer number (5958225).

Almost surely, 2^320233320 is an apocalyptic number.

320233320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320233320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571989600).

320233320 is an abundant number, since it is smaller than the sum of its proper divisors (823745880).

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

320233320 is a wasteful number, since it uses less digits than its factorization.

320233320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 320233320 is about 17895.0641239421. The cubic root of 320233320 is about 684.1565764459.

Adding to 320233320 its reverse (23332023), we get a palindrome (343565343).

The spelling of 320233320 in words is "three hundred twenty million, two hundred thirty-three thousand, three hundred twenty".