320746306 has 16 divisors (see below), whose sum is σ = 487513080. Its totient is φ = 158252800.

The previous prime is 320746297. The next prime is 320746373. The reversal of 320746306 is 603647023.

It can be written as a sum of positive squares in 4 ways, for example, as 275062225 + 45684081 = 16585^2 + 6759^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 61530 + ... + 66538.

Almost surely, 2^320746306 is an apocalyptic number.

320746306 is a deficient number, since it is larger than the sum of its proper divisors (166766774).

320746306 is a wasteful number, since it uses less digits than its factorization.

320746306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 320746306 is about 17909.3915586209. The cubic root of 320746306 is about 684.5217013785.

The spelling of 320746306 in words is "three hundred twenty million, seven hundred forty-six thousand, three hundred six".