304223145 has 16 divisors (see below), whose sum is σ = 487278720. Its totient is φ = 162078464.

The previous prime is 304223141. The next prime is 304223189. The reversal of 304223145 is 541322403.

It is a cyclic number.

It is not a de Polignac number, because 304223145 - 2² = 304223141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (304223141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4276 + ... + 25034.

It is an arithmetic number, because the mean of its divisors is an integer number (30454920).

Almost surely, 2^304223145 is an apocalyptic number.

It is an amenable number.

304223145 is a deficient number, since it is larger than the sum of its proper divisors (183055575).

304223145 is a wasteful number, since it uses less digits than its factorization.

304223145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21744.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 304223145 is about 17441.9937220491. The cubic root of 304223145 is about 672.5595604209.

Adding to 304223145 its reverse (541322403), we get a palindrome (845545548).

The spelling of 304223145 in words is "three hundred four million, two hundred twenty-three thousand, one hundred forty-five".