12728313078 has 24 divisors (see below), whose sum is σ = 27565461288. Its totient is φ = 3916403712.

The previous prime is 12728313077. The next prime is 12728313127. The reversal of 12728313078 is 87031382721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728313071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6275275 + ... + 6277302.

It is an arithmetic number, because the mean of its divisors is an integer number (1148560887).

Almost surely, 2^12728313078 is an apocalyptic number.

12728313078 is an abundant number, since it is smaller than the sum of its proper divisors (14837148210).

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

12728313078 is a wasteful number, since it uses less digits than its factorization.

12728313078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552608 (or 12552595 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

Adding to 12728313078 its reverse (87031382721), we get a palindrome (99759695799).

The spelling of 12728313078 in words is "twelve billion, seven hundred twenty-eight million, three hundred thirteen thousand, seventy-eight".