320345746 has 32 divisors (see below), whose sum is σ = 556238592. Its totient is φ = 135535680.

The previous prime is 320345737. The next prime is 320345777. The reversal of 320345746 is 647543023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422800 + ... + 423556.

It is an arithmetic number, because the mean of its divisors is an integer number (17382456).

Almost surely, 2^320345746 is an apocalyptic number.

320345746 is a deficient number, since it is larger than the sum of its proper divisors (235892846).

320345746 is a wasteful number, since it uses less digits than its factorization.

320345746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 320345746 is about 17898.2051055406. The cubic root of 320345746 is about 684.2366305637.

Adding to 320345746 its reverse (647543023), we get a palindrome (967888769).

The spelling of 320345746 in words is "three hundred twenty million, three hundred forty-five thousand, seven hundred forty-six".