320210745 has 16 divisors (see below), whose sum is σ = 512832192. Its totient is φ = 170614080.

The previous prime is 320210741. The next prime is 320210747. The reversal of 320210745 is 547012023.

It is not a de Polignac number, because 320210745 - 2² = 320210741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320210741) 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, 6630 + ... + 26160.

It is an arithmetic number, because the mean of its divisors is an integer number (32052012).

Almost surely, 2^320210745 is an apocalyptic number.

It is an amenable number.

320210745 is a deficient number, since it is larger than the sum of its proper divisors (192621447).

320210745 is a wasteful number, since it uses less digits than its factorization.

320210745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20632.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 320210745 is about 17894.4333523026. The cubic root of 320210745 is about 684.1404994205.

Adding to 320210745 its reverse (547012023), we get a palindrome (867222768).

The spelling of 320210745 in words is "three hundred twenty million, two hundred ten thousand, seven hundred forty-five".