304004240 has 20 divisors (see below), whose sum is σ = 706810044. Its totient is φ = 121601664.

The previous prime is 304004219. The next prime is 304004249. The reversal of 304004240 is 42400403.

It can be written as a sum of positive squares in 2 ways, for example, as 52591504 + 251412736 = 7252^2 + 15856^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (304004249) 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 3 ways as a sum of consecutive naturals, for example, 1899947 + ... + 1900106.

Almost surely, 2^304004240 is an apocalyptic number.

It is an amenable number.

304004240 is an abundant number, since it is smaller than the sum of its proper divisors (402805804).

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

304004240 is a wasteful number, since it uses less digits than its factorization.

304004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800066 (or 3800060 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 304004240 is about 17435.7173640777. The cubic root of 304004240 is about 672.3982073926.

Adding to 304004240 its reverse (42400403), we get a palindrome (346404643).

The spelling of 304004240 in words is "three hundred four million, four thousand, two hundred forty".