304434221 has 8 divisors (see below), whose sum is σ = 374688384. Its totient is φ = 240870960.

The previous prime is 304434191. The next prime is 304434227. The reversal of 304434221 is 122434403.

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 304434221 - 2¹⁰ = 304433197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304434227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672625 + ... + 1672806.

It is an arithmetic number, because the mean of its divisors is an integer number (46836048).

Almost surely, 2^304434221 is an apocalyptic number.

It is an amenable number.

304434221 is a deficient number, since it is larger than the sum of its proper divisors (70254163).

304434221 is a wasteful number, since it uses less digits than its factorization.

304434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345451.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 304434221 is about 17448.0434719770. The cubic root of 304434221 is about 672.7150694773.

Adding to 304434221 its reverse (122434403), we get a palindrome (426868624).

The spelling of 304434221 in words is "three hundred four million, four hundred thirty-four thousand, two hundred twenty-one".