305000530 has 16 divisors (see below), whose sum is σ = 554039640. Its totient is φ = 120880512.

The previous prime is 305000471. The next prime is 305000543. The reversal of 305000530 is 35000503.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 286997481 + 18003049 = 16941^2 + 4243^2 .

It is an unprimeable number.

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, 138819 + ... + 140998.

Almost surely, 2^305000530 is an apocalyptic number.

305000530 is a deficient number, since it is larger than the sum of its proper divisors (249039110).

305000530 is a wasteful number, since it uses less digits than its factorization.

305000530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279933.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 305000530 is about 17464.2643704222. The cubic root of 305000530 is about 673.1319396276.

The spelling of 305000530 in words is "three hundred five million, five hundred thirty", and thus it is an aban number.