304144140 has 48 divisors (see below), whose sum is σ = 852380928. Its totient is φ = 81031104.

The previous prime is 304144123. The next prime is 304144151. The reversal of 304144140 is 41441403.

It is a super-3 number, since 3×304144140³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105559 + ... + 108401.

It is an arithmetic number, because the mean of its divisors is an integer number (17757936).

Almost surely, 2^304144140 is an apocalyptic number.

304144140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304144140 is an abundant number, since it is smaller than the sum of its proper divisors (548236788).

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

304144140 is a wasteful number, since it uses less digits than its factorization.

304144140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638 (or 4636 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 304144140 is about 17439.7287822948. The cubic root of 304144140 is about 672.5013354313.

Adding to 304144140 its reverse (41441403), we get a palindrome (345585543).

The spelling of 304144140 in words is "three hundred four million, one hundred forty-four thousand, one hundred forty".