320040352 has 12 divisors (see below), whose sum is σ = 630079506. Its totient is φ = 160020160.

The previous prime is 320040349. The next prime is 320040353. The reversal of 320040352 is 253040023.

It can be written as a sum of positive squares in only one way, i.e., 219158416 + 100881936 = 14804^2 + 10044^2 .

It is not an unprimeable number, because it can be changed into a prime (320040353) 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 as a sum of consecutive naturals, namely, 5000599 + ... + 5000662.

Almost surely, 2^320040352 is an apocalyptic number.

320040352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320040352 is a deficient number, since it is larger than the sum of its proper divisors (310039154).

320040352 is a wasteful number, since it uses less digits than its factorization.

320040352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001271 (or 10001263 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 320040352 is about 17889.6716571322. The cubic root of 320040352 is about 684.0191278579.

Adding to 320040352 its reverse (253040023), we get a palindrome (573080375).

The spelling of 320040352 in words is "three hundred twenty million, forty thousand, three hundred fifty-two".