320333872 has 20 divisors (see below), whose sum is σ = 621194616. Its totient is φ = 160025600.

The previous prime is 320333837. The next prime is 320333879. The reversal of 320333872 is 278333023.

It is a super-2 number, since 2×320333872² = 205227579101024768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320333879) 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 3 ways as a sum of consecutive naturals, for example, 11247 + ... + 27697.

Almost surely, 2^320333872 is an apocalyptic number.

It is an amenable number.

320333872 is a deficient number, since it is larger than the sum of its proper divisors (300860744).

320333872 is a wasteful number, since it uses less digits than its factorization.

320333872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17676 (or 17670 counting only the distinct ones).

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

The square root of 320333872 is about 17897.8733932275. The cubic root of 320333872 is about 684.2281764416.

Adding to 320333872 its reverse (278333023), we get a palindrome (598666895).

The spelling of 320333872 in words is "three hundred twenty million, three hundred thirty-three thousand, eight hundred seventy-two".