304224140 has 48 divisors (see below), whose sum is σ = 713180160. Its totient is φ = 108050880.

The previous prime is 304224121. The next prime is 304224149. The reversal of 304224140 is 41422403.

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

It is not an unprimeable number, because it can be changed into a prime (304224149) 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, 6620 + ... + 25539.

It is an arithmetic number, because the mean of its divisors is an integer number (14857920).

Almost surely, 2^304224140 is an apocalyptic number.

It is an amenable number.

304224140 is an abundant number, since it is smaller than the sum of its proper divisors (408956020).

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

304224140 is a wasteful number, since it uses less digits than its factorization.

304224140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222 (or 32220 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 304224140 is about 17442.0222451412. The cubic root of 304224140 is about 672.5602936503.

Adding to 304224140 its reverse (41422403), we get a palindrome (345646543).

The spelling of 304224140 in words is "three hundred four million, two hundred twenty-four thousand, one hundred forty".