304140005 has 12 divisors (see below), whose sum is σ = 395203140. Its totient is φ = 224595072.

The previous prime is 304139999. The next prime is 304140007. The reversal of 304140005 is 500041403.

It can be written as a sum of positive squares in 6 ways, for example, as 62710561 + 241429444 = 7919^2 + 15538^2 .

It is not a de Polignac number, because 304140005 - 2²⁰ = 303091429 is a prime.

It is a super-2 number, since 2×304140005² = 185002285282800050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304140007) 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 11 ways as a sum of consecutive naturals, for example, 179120 + ... + 180809.

It is an arithmetic number, because the mean of its divisors is an integer number (32933595).

Almost surely, 2^304140005 is an apocalyptic number.

It is an amenable number.

304140005 is a deficient number, since it is larger than the sum of its proper divisors (91063135).

304140005 is a wasteful number, since it uses less digits than its factorization.

304140005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359960 (or 359947 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 304140005 is about 17439.6102307362. The cubic root of 304140005 is about 672.4982877473.

Adding to 304140005 its reverse (500041403), we get a palindrome (804181408).

The spelling of 304140005 in words is "three hundred four million, one hundred forty thousand, five".