305445204 has 18 divisors (see below), whose sum is σ = 772097690. Its totient is φ = 101815056.

The previous prime is 305445191. The next prime is 305445209. The reversal of 305445204 is 402544503.

It can be written as a sum of positive squares in only one way, i.e., 265755204 + 39690000 = 16302^2 + 6300^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305445209) 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 5 ways as a sum of consecutive naturals, for example, 4242259 + ... + 4242330.

Almost surely, 2^305445204 is an apocalyptic number.

It is an amenable number.

305445204 is an abundant number, since it is smaller than the sum of its proper divisors (466652486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305445204 is a wasteful number, since it uses less digits than its factorization.

305445204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484599 (or 8484594 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 305445204 is about 17476.9907020631. The cubic root of 305445204 is about 673.4589105608.

Adding to 305445204 its reverse (402544503), we get a palindrome (707989707).

The spelling of 305445204 in words is "three hundred five million, four hundred forty-five thousand, two hundred four".