304405 has 8 divisors (see below), whose sum is σ = 381312. Its totient is φ = 232848.

The previous prime is 304393. The next prime is 304411. The reversal of 304405 is 504403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304405 - 2⁵ = 304373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (47664).

2³⁰⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

304405 is a deficient number, since it is larger than the sum of its proper divisors (76907).

304405 is a wasteful number, since it uses less digits than its factorization.

304405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 304405 is about 551.7291001932. The cubic root of 304405 is about 67.2693545357.

Adding to 304405 its reverse (504403), we get a palindrome (808808).

The spelling of 304405 in words is "three hundred four thousand, four hundred five".