304224240 has 80 divisors (see below), whose sum is σ = 960929568. Its totient is φ = 79592448.

The previous prime is 304224149. The next prime is 304224247. The reversal of 304224240 is 42422403.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304224247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762 + ... + 24678.

Almost surely, 2^304224240 is an apocalyptic number.

304224240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304224240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480464784).

304224240 is an abundant number, since it is smaller than the sum of its proper divisors (656705328).

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

304224240 is a wasteful number, since it uses less digits than its factorization.

304224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23986 (or 23980 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 304224240 is about 17442.0251117810. The cubic root of 304224240 is about 672.5603673416.

Adding to 304224240 its reverse (42422403), we get a palindrome (346646643).

The spelling of 304224240 in words is "three hundred four million, two hundred twenty-four thousand, two hundred forty".