330021320 has 32 divisors (see below), whose sum is σ = 752726520. Its totient is φ = 130199040.

The previous prime is 330021313. The next prime is 330021331. The reversal of 330021320 is 23120033.

It can be written as a sum of positive squares in 4 ways, for example, as 301994884 + 28026436 = 17378^2 + 5294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 330021295 and 330021304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53591 + ... + 59430.

Almost surely, 2^330021320 is an apocalyptic number.

It is an amenable number.

330021320 is an abundant number, since it is smaller than the sum of its proper divisors (422705200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

330021320 is a wasteful number, since it uses less digits than its factorization.

330021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113105 (or 113101 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 330021320 is about 18166.4889287941. The cubic root of 330021320 is about 691.0572045214.

Adding to 330021320 its reverse (23120033), we get a palindrome (353141353).

The spelling of 330021320 in words is "three hundred thirty million, twenty-one thousand, three hundred twenty".