513969328 has 40 divisors (see below), whose sum is σ = 1015077888. Its totient is φ = 252048192.

The previous prime is 513969311. The next prime is 513969329. The reversal of 513969328 is 823969315.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (513969329) 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 7 ways as a sum of consecutive naturals, for example, 281025 + ... + 282847.

Almost surely, 2^513969328 is an apocalyptic number.

It is an amenable number.

513969328 is a deficient number, since it is larger than the sum of its proper divisors (501108560).

513969328 is a wasteful number, since it uses less digits than its factorization.

513969328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161 (or 2155 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 513969328 is about 22670.8916454559. The cubic root of 513969328 is about 801.0243794153.

The spelling of 513969328 in words is "five hundred thirteen million, nine hundred sixty-nine thousand, three hundred twenty-eight".