12340784320 has 224 divisors, whose sum is σ = 31526756352. Its totient is φ = 4591116288.

The previous prime is 12340784293. The next prime is 12340784321. The reversal of 12340784320 is 2348704321.

12340784320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12340784321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55339729 + ... + 55339951.

It is an arithmetic number, because the mean of its divisors is an integer number (140744448).

Almost surely, 2^12340784320 is an apocalyptic number.

12340784320 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 12340784320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15763378176).

12340784320 is an abundant number, since it is smaller than the sum of its proper divisors (19185972032).

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

12340784320 is a wasteful number, since it uses less digits than its factorization.

12340784320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 12340784320 in words is "twelve billion, three hundred forty million, seven hundred eighty-four thousand, three hundred twenty".