12238304256 has 264 divisors, whose sum is σ = 37016965440. Its totient is φ = 4038377472.

The previous prime is 12238304249. The next prime is 12238304303. The reversal of 12238304256 is 65240383221.

12238304256 is a `hidden beast` number, since 1 + 22 + 383 + 0 + 4 + 256 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12238304256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34089805 + ... + 34090163.

Almost surely, 2^12238304256 is an apocalyptic number.

12238304256 is a gapful number since it is divisible by the number (16) 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 12238304256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18508482720).

12238304256 is an abundant number, since it is smaller than the sum of its proper divisors (24778661184).

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

12238304256 is an equidigital number, since it uses as much as digits as its factorization.

12238304256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12238304256 its reverse (65240383221), we get a palindrome (77478687477).

The spelling of 12238304256 in words is "twelve billion, two hundred thirty-eight million, three hundred four thousand, two hundred fifty-six".