304005 has 16 divisors (see below), whose sum is σ = 524160. Its totient is φ = 149568.

The previous prime is 303997. The next prime is 304009. The reversal of 304005 is 500403.

It is not a de Polignac number, because 304005 - 2³ = 303997 is a prime.

It is a Curzon number.

304005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585 + ... + 974.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2³⁰⁴⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

304005 is a deficient number, since it is larger than the sum of its proper divisors (220155).

304005 is a wasteful number, since it uses less digits than its factorization.

304005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 304005 is about 551.3664842915. The cubic root of 304005 is about 67.2398767716.

Adding to 304005 its reverse (500403), we get a palindrome (804408).

The spelling of 304005 in words is "three hundred four thousand, five".