304240233540 has 96 divisors (see below), whose sum is σ = 864168754176. Its totient is φ = 79966886400.

The previous prime is 304240233529. The next prime is 304240233547. The reversal of 304240233540 is 45332042403.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 304240233498 and 304240233507.

It is not an unprimeable number, because it can be changed into a prime (304240233547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1238814 + ... + 1463946.

It is an arithmetic number, because the mean of its divisors is an integer number (9001757856).

Almost surely, 2^304240233540 is an apocalyptic number.

304240233540 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 304240233540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432084377088).

304240233540 is an abundant number, since it is smaller than the sum of its proper divisors (559928520636).

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

304240233540 is a wasteful number, since it uses less digits than its factorization.

304240233540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225469 (or 225467 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 304240233540 its reverse (45332042403), we get a palindrome (349572275943).

The spelling of 304240233540 in words is "three hundred four billion, two hundred forty million, two hundred thirty-three thousand, five hundred forty".