509478824 has 16 divisors (see below), whose sum is σ = 973297620. Its totient is φ = 249932800.

The previous prime is 509478803. The next prime is 509478847. The reversal of 509478824 is 428874905.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 505800100 + 3678724 = 22490^2 + 1918^2 .

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, 600377 + ... + 601224.

Almost surely, 2^509478824 is an apocalyptic number.

It is an amenable number.

509478824 is a deficient number, since it is larger than the sum of its proper divisors (463818796).

509478824 is a wasteful number, since it uses less digits than its factorization.

509478824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201660 (or 1201656 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 509478824 is about 22571.6376012021. The cubic root of 509478824 is about 798.6847262538.

The spelling of 509478824 in words is "five hundred nine million, four hundred seventy-eight thousand, eight hundred twenty-four".