304444140 has 384 divisors, whose sum is σ = 1184053248. Its totient is φ = 56401920.

The previous prime is 304444139. The next prime is 304444141. The reversal of 304444140 is 41444403.

It is an interprime number because it is at equal distance from previous prime (304444139) and next prime (304444141).

It is a self number, because there is not a number n which added to its sum of digits gives 304444140.

It is not an unprimeable number, because it can be changed into a prime (304444141) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2222152 + ... + 2222288.

It is an arithmetic number, because the mean of its divisors is an integer number (3083472).

Almost surely, 2^304444140 is an apocalyptic number.

304444140 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 304444140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592026624).

304444140 is an abundant number, since it is smaller than the sum of its proper divisors (879609108).

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

304444140 is a wasteful number, since it uses less digits than its factorization.

304444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 304444140 is about 17448.3277135661. The cubic root of 304444140 is about 672.7223754762.

Adding to 304444140 its reverse (41444403), we get a palindrome (345888543).

It can be divided in two parts, 304 and 444140, that added together give a palindrome (444444).

The spelling of 304444140 in words is "three hundred four million, four hundred forty-four thousand, one hundred forty".