513945328 has 20 divisors (see below), whose sum is σ = 1072367128. Its totient is φ = 237205440.

The previous prime is 513945277. The next prime is 513945353. The reversal of 513945328 is 823549315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235238 + ... + 1235653.

Almost surely, 2^513945328 is an apocalyptic number.

It is an amenable number.

513945328 is an abundant number, since it is smaller than the sum of its proper divisors (558421800).

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

513945328 is a wasteful number, since it uses less digits than its factorization.

513945328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470912 (or 2470906 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 513945328 is about 22670.3623261738. The cubic root of 513945328 is about 801.0119111717.

The spelling of 513945328 in words is "five hundred thirteen million, nine hundred forty-five thousand, three hundred twenty-eight".