304406221 has 8 divisors (see below), whose sum is σ = 348139584. Its totient is φ = 260734560.

The previous prime is 304406209. The next prime is 304406227. The reversal of 304406221 is 122604403.

It is a happy number.

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 304406221 - 2¹¹ = 304404173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304406192 and 304406201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304406227) 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, 4315 + ... + 25048.

It is an arithmetic number, because the mean of its divisors is an integer number (43517448).

Almost surely, 2^304406221 is an apocalyptic number.

It is an amenable number.

304406221 is a deficient number, since it is larger than the sum of its proper divisors (43733363).

304406221 is a wasteful number, since it uses less digits than its factorization.

304406221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30851.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 304406221 is about 17447.2410712984. The cubic root of 304406221 is about 672.6944447707.

The spelling of 304406221 in words is "three hundred four million, four hundred six thousand, two hundred twenty-one".