304520216 has 96 divisors (see below), whose sum is σ = 772655520. Its totient is φ = 109486080.

The previous prime is 304520189. The next prime is 304520231. The reversal of 304520216 is 612025403.

It is a junction number, because it is equal to n+sod(n) for n = 304520191 and 304520200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86360 + ... + 89816.

It is an arithmetic number, because the mean of its divisors is an integer number (8048495).

Almost surely, 2^304520216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304520216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386327760).

304520216 is an abundant number, since it is smaller than the sum of its proper divisors (468135304).

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

304520216 is a wasteful number, since it uses less digits than its factorization.

304520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 304520216 is about 17450.5076143933. The cubic root of 304520216 is about 672.7784052021.

Adding to 304520216 its reverse (612025403), we get a palindrome (916545619).

The spelling of 304520216 in words is "three hundred four million, five hundred twenty thousand, two hundred sixteen".