12728215090 has 16 divisors (see below), whose sum is σ = 22965214680. Its totient is φ = 5079191040.

The previous prime is 12728215069. The next prime is 12728215133. The reversal of 12728215090 is 9051282721.

12728215090 is digitally balanced in base 2, 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 3616939881 + 9111275209 = 60141^2 + 95453^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1507455 + ... + 1515874.

Almost surely, 2^12728215090 is an apocalyptic number.

12728215090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12728215090 is a deficient number, since it is larger than the sum of its proper divisors (10236999590).

12728215090 is a wasteful number, since it uses less digits than its factorization.

12728215090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023757.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 12728215090 in words is "twelve billion, seven hundred twenty-eight million, two hundred fifteen thousand, ninety".