305430056 has 8 divisors (see below), whose sum is σ = 572681370. Its totient is φ = 152715024.

The previous prime is 305430049. The next prime is 305430061. The reversal of 305430056 is 650034503.

305430056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 172396900 + 133033156 = 13130^2 + 11534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 19089371 + ... + 19089386.

Almost surely, 2^305430056 is an apocalyptic number.

It is an amenable number.

305430056 is a deficient number, since it is larger than the sum of its proper divisors (267251314).

305430056 is a wasteful number, since it uses less digits than its factorization.

305430056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38178763 (or 38178759 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 305430056 is about 17476.5573268879. The cubic root of 305430056 is about 673.4477773863.

Adding to 305430056 its reverse (650034503), we get a palindrome (955464559).

The spelling of 305430056 in words is "three hundred five million, four hundred thirty thousand, fifty-six".