304216 has 16 divisors (see below), whose sum is σ = 622440. Its totient is φ = 138240.

The previous prime is 304211. The next prime is 304217. The reversal of 304216 is 612403.

304216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 304216.

It is a congruent number.

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

304216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641 + ... + 1816.

2³⁰⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

304216 is an abundant number, since it is smaller than the sum of its proper divisors (318224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304216 is a wasteful number, since it uses less digits than its factorization.

304216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474 (or 3470 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 304216 is about 551.5577938893. The cubic root of 304216 is about 67.2554295124.

Adding to 304216 its reverse (612403), we get a palindrome (916619).

The spelling of 304216 in words is "three hundred four thousand, two hundred sixteen".