304004340 has 240 divisors, whose sum is σ = 1024531200. Its totient is φ = 75271680.

The previous prime is 304004263. The next prime is 304004341. The reversal of 304004340 is 43400403.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304004341) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1527561 + ... + 1527759.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^304004340 is an apocalyptic number.

304004340 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 304004340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512265600).

304004340 is an abundant number, since it is smaller than the sum of its proper divisors (720526860).

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

304004340 is a wasteful number, since it uses less digits than its factorization.

304004340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 304004340 is about 17435.7202317541. The cubic root of 304004340 is about 672.3982811194.

Adding to 304004340 its reverse (43400403), we get a palindrome (347404743).

The spelling of 304004340 in words is "three hundred four million, four thousand, three hundred forty".