304413221 has 8 divisors (see below), whose sum is σ = 349824384. Its totient is φ = 259482960.

The previous prime is 304413217. The next prime is 304413247. The reversal of 304413221 is 122314403.

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 304413221 - 2² = 304413217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304413193 and 304413202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304413121) 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 7 ways as a sum of consecutive naturals, for example, 118865 + ... + 121398.

It is an arithmetic number, because the mean of its divisors is an integer number (43728048).

Almost surely, 2^304413221 is an apocalyptic number.

It is an amenable number.

304413221 is a deficient number, since it is larger than the sum of its proper divisors (45411163).

304413221 is a wasteful number, since it uses less digits than its factorization.

304413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240451.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 304413221 is about 17447.4416749276. The cubic root of 304413221 is about 672.6996010659.

Adding to 304413221 its reverse (122314403), we get a palindrome (426727624).

The spelling of 304413221 in words is "three hundred four million, four hundred thirteen thousand, two hundred twenty-one".