304503040 has 72 divisors (see below), whose sum is σ = 733227768. Its totient is φ = 121159680.

The previous prime is 304502993. The next prime is 304503047. The reversal of 304503040 is 40305403.

It can be written as a sum of positive squares in 4 ways, for example, as 12503296 + 291999744 = 3536^2 + 17088^2 .

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 304502999 and 304503017.

It is not an unprimeable number, because it can be changed into a prime (304503047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297730 + ... + 298750.

It is an arithmetic number, because the mean of its divisors is an integer number (10183719).

Almost surely, 2^304503040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304503040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366613884).

304503040 is an abundant number, since it is smaller than the sum of its proper divisors (428724728).

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

304503040 is a wasteful number, since it uses less digits than its factorization.

304503040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 304503040 is about 17450.0154727725. The cubic root of 304503040 is about 672.7657559498.

Adding to 304503040 its reverse (40305403), we get a palindrome (344808443).

The spelling of 304503040 in words is "three hundred four million, five hundred three thousand, forty".