304480513 has 4 divisors (see below), whose sum is σ = 305353300. Its totient is φ = 303607728.

The previous prime is 304480471. The next prime is 304480531. The reversal of 304480513 is 315084403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 281132289 + 23348224 = 16767^2 + 4832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304480513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304480213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435870 + ... + 436567.

It is an arithmetic number, because the mean of its divisors is an integer number (76338325).

Almost surely, 2^304480513 is an apocalyptic number.

It is an amenable number.

304480513 is a deficient number, since it is larger than the sum of its proper divisors (872787).

304480513 is an equidigital number, since it uses as much as digits as its factorization.

304480513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872786.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 304480513 is about 17449.3699886271. The cubic root of 304480513 is about 672.7491652365.

The spelling of 304480513 in words is "three hundred four million, four hundred eighty thousand, five hundred thirteen".