12304004240 has 80 divisors (see below), whose sum is σ = 31239786240. Its totient is φ = 4469544960.

The previous prime is 12304004239. The next prime is 12304004243. The reversal of 12304004240 is 4240040321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12304004243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907592 + ... + 921048.

It is an arithmetic number, because the mean of its divisors is an integer number (390497328).

Almost surely, 2^12304004240 is an apocalyptic number.

12304004240 is a gapful number since it is divisible by the number (10) 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 12304004240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15619893120).

12304004240 is an abundant number, since it is smaller than the sum of its proper divisors (18935782000).

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

12304004240 is a wasteful number, since it uses less digits than its factorization.

12304004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520 (or 14514 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12304004240 its reverse (4240040321), we get a palindrome (16544044561).

The spelling of 12304004240 in words is "twelve billion, three hundred four million, four thousand, two hundred forty".