320741740 has 48 divisors (see below), whose sum is σ = 760142880. Its totient is φ = 112609280.

The previous prime is 320741723. The next prime is 320741747. The reversal of 320741740 is 47147023.

It is a junction number, because it is equal to n+sod(n) for n = 320741699 and 320741708.

It is not an unprimeable number, because it can be changed into a prime (320741747) by changing a digit.

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, 18757 + ... + 31516.

It is an arithmetic number, because the mean of its divisors is an integer number (15836310).

Almost surely, 2^320741740 is an apocalyptic number.

It is an amenable number.

320741740 is an abundant number, since it is smaller than the sum of its proper divisors (439401140).

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

320741740 is a wasteful number, since it uses less digits than its factorization.

320741740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50322 (or 50320 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 320741740 is about 17909.2640831498. The cubic root of 320741740 is about 684.5184531822.

Adding to 320741740 its reverse (47147023), we get a palindrome (367888763).

The spelling of 320741740 in words is "three hundred twenty million, seven hundred forty-one thousand, seven hundred forty".