304224120 has 128 divisors (see below), whose sum is σ = 1024488000. Its totient is φ = 80294400.

The previous prime is 304224113. The next prime is 304224121. The reversal of 304224120 is 21422403.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 304224093 and 304224102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304224121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107686 + ... + 110474.

Almost surely, 2^304224120 is an apocalyptic number.

304224120 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 304224120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512244000).

304224120 is an abundant number, since it is smaller than the sum of its proper divisors (720263880).

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

304224120 is a wasteful number, since it uses less digits than its factorization.

304224120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910 (or 2900 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 304224120 is about 17442.0216718132. The cubic root of 304224120 is about 672.5602789120.

Adding to 304224120 its reverse (21422403), we get a palindrome (325646523).

The spelling of 304224120 in words is "three hundred four million, two hundred twenty-four thousand, one hundred twenty".