320033443240 has 96 divisors (see below), whose sum is σ = 860277627720. Its totient is φ = 106760166912.

The previous prime is 320033443201. The next prime is 320033443241. The reversal of 320033443240 is 42344330023.

It can be written as a sum of positive squares in 4 ways, for example, as 295081449796 + 24951993444 = 543214^2 + 157962^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 320033443199 and 320033443208.

It is not an unprimeable number, because it can be changed into a prime (320033443241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2133999 + ... + 2279038.

Almost surely, 2^320033443240 is an apocalyptic number.

It is an amenable number.

320033443240 is an abundant number, since it is smaller than the sum of its proper divisors (540244184480).

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

320033443240 is a wasteful number, since it uses less digits than its factorization.

320033443240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413099 (or 4413088 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 320033443240 its reverse (42344330023), we get a palindrome (362377773263).

The spelling of 320033443240 in words is "three hundred twenty billion, thirty-three million, four hundred forty-three thousand, two hundred forty".