12728067490 has 16 divisors (see below), whose sum is σ = 22920536952. Its totient is φ = 5089001344.

The previous prime is 12728067481. The next prime is 12728067523. The reversal of 12728067490 is 9476082721.

12728067490 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9965829241 + 2762238249 = 99829^2 + 52557^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12728067490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254089 + ... + 300028.

Almost surely, 2^12728067490 is an apocalyptic number.

12728067490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12728067490 is a deficient number, since it is larger than the sum of its proper divisors (10192469462).

12728067490 is a wasteful number, since it uses less digits than its factorization.

12728067490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556421.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 12728067490 in words is "twelve billion, seven hundred twenty-eight million, sixty-seven thousand, four hundred ninety".