304500213 has 12 divisors (see below), whose sum is σ = 462983040. Its totient is φ = 192315816.

The previous prime is 304500179. The next prime is 304500221. The reversal of 304500213 is 312005403.

304500213 is a `hidden beast` number, since 3 + 0 + 450 + 0 + 213 = 666.

It is not a de Polignac number, because 304500213 - 2²⁸ = 36064757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304500233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890181 + ... + 890522.

It is an arithmetic number, because the mean of its divisors is an integer number (38581920).

Almost surely, 2^304500213 is an apocalyptic number.

It is an amenable number.

304500213 is a deficient number, since it is larger than the sum of its proper divisors (158482827).

304500213 is a wasteful number, since it uses less digits than its factorization.

304500213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780728 (or 1780725 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 304500213 is about 17449.9344697910. The cubic root of 304500213 is about 672.7636739622.

Adding to 304500213 its reverse (312005403), we get a palindrome (616505616).

The spelling of 304500213 in words is "three hundred four million, five hundred thousand, two hundred thirteen".