304223240 has 32 divisors (see below), whose sum is σ = 687960000. Its totient is φ = 121074624.

The previous prime is 304223221. The next prime is 304223263. The reversal of 304223240 is 42322403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 11150 + ... + 27069.

It is an arithmetic number, because the mean of its divisors is an integer number (21498750).

Almost surely, 2^304223240 is an apocalyptic number.

It is an amenable number.

304223240 is an abundant number, since it is smaller than the sum of its proper divisors (383736760).

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

304223240 is a wasteful number, since it uses less digits than its factorization.

304223240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38429 (or 38425 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 304223240 is about 17441.9964453614. The cubic root of 304223240 is about 672.5596304278.

Adding to 304223240 its reverse (42322403), we get a palindrome (346545643).

The spelling of 304223240 in words is "three hundred four million, two hundred twenty-three thousand, two hundred forty".