304223144 has 8 divisors (see below), whose sum is σ = 570418410. Its totient is φ = 152111568.

The previous prime is 304223141. The next prime is 304223189. The reversal of 304223144 is 441322403.

It can be written as a sum of positive squares in only one way, i.e., 168220900 + 136002244 = 12970^2 + 11662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19013939 + ... + 19013954.

Almost surely, 2^304223144 is an apocalyptic number.

It is an amenable number.

304223144 is a deficient number, since it is larger than the sum of its proper divisors (266195266).

304223144 is a wasteful number, since it uses less digits than its factorization.

304223144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38027899 (or 38027895 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 304223144 is about 17441.9936933826. The cubic root of 304223144 is about 672.5595596840.

Adding to 304223144 its reverse (441322403), we get a palindrome (745545547).

The spelling of 304223144 in words is "three hundred four million, two hundred twenty-three thousand, one hundred forty-four".