304219 has 4 divisors (see below), whose sum is σ = 307120. Its totient is φ = 301320.

The previous prime is 304217. The next prime is 304223. The reversal of 304219 is 912403.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 304219 - 2¹ = 304217 is a prime.

It is a super-2 number, since 2×304219² = 185098399922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304196 and 304205.

It is not an unprimeable number, because it can be changed into a prime (304211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287 + ... + 1504.

It is an arithmetic number, because the mean of its divisors is an integer number (76780).

2³⁰⁴²¹⁹ is an apocalyptic number.

304219 is a deficient number, since it is larger than the sum of its proper divisors (2901).

304219 is a wasteful number, since it uses less digits than its factorization.

304219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 304219 is about 551.5605134525. The cubic root of 304219 is about 67.2556505895.

The spelling of 304219 in words is "three hundred four thousand, two hundred nineteen".