305044130 has 16 divisors (see below), whose sum is σ = 554118840. Its totient is φ = 120897792.

The previous prime is 305044121. The next prime is 305044133. The reversal of 305044130 is 31440503.

It can be written as a sum of positive squares in 4 ways, for example, as 304886521 + 157609 = 17461^2 + 397^2 .

It is not an unprimeable number, because it can be changed into a prime (305044133) 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, 138839 + ... + 141018.

Almost surely, 2^305044130 is an apocalyptic number.

305044130 is a deficient number, since it is larger than the sum of its proper divisors (249074710).

305044130 is a wasteful number, since it uses less digits than its factorization.

305044130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279973.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305044130 is about 17465.5125890997. The cubic root of 305044130 is about 673.1640129645.

Adding to 305044130 its reverse (31440503), we get a palindrome (336484633).

The spelling of 305044130 in words is "three hundred five million, forty-four thousand, one hundred thirty".