304130400 has 288 divisors, whose sum is σ = 1160425728. Its totient is φ = 67737600.

The previous prime is 304130389. The next prime is 304130401. The reversal of 304130400 is 4031403.

304130400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 304130400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304130401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 722190 + ... + 722610.

It is an arithmetic number, because the mean of its divisors is an integer number (4029256).

Almost surely, 2^304130400 is an apocalyptic number.

304130400 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 304130400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580212864).

304130400 is an abundant number, since it is smaller than the sum of its proper divisors (856295328).

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

304130400 is a wasteful number, since it uses less digits than its factorization.

304130400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 304130400 is about 17439.3348497011. The cubic root of 304130400 is about 672.4912083169.

Adding to 304130400 its reverse (4031403), we get a palindrome (308161803).

The spelling of 304130400 in words is "three hundred four million, one hundred thirty thousand, four hundred".