12728322750 has 192 divisors, whose sum is σ = 37610314560. Its totient is φ = 2848032000.

The previous prime is 12728322743. The next prime is 12728322757. The reversal of 12728322750 is 5722382721.

It is an interprime number because it is at equal distance from previous prime (12728322743) and next prime (12728322757).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 12728322699 and 12728322708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728322757) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1174356 + ... + 1185144.

It is an arithmetic number, because the mean of its divisors is an integer number (195887055).

Almost surely, 2^12728322750 is an apocalyptic number.

12728322750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12728322750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18805157280).

12728322750 is an abundant number, since it is smaller than the sum of its proper divisors (24881991810).

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

12728322750 is a wasteful number, since it uses less digits than its factorization.

12728322750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10844 (or 10823 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 12728322750 in words is "twelve billion, seven hundred twenty-eight million, three hundred twenty-two thousand, seven hundred fifty".