13366002728 has 16 divisors (see below), whose sum is σ = 26989044180. Its totient is φ = 6168924288.

The previous prime is 13366002709. The next prime is 13366002731. The reversal of 13366002728 is 82720066331.

It can be written as a sum of positive squares in 2 ways, for example, as 12670203844 + 695798884 = 112562^2 + 26378^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13366002691 and 13366002700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64259525 + ... + 64259732.

Almost surely, 2^13366002728 is an apocalyptic number.

It is an amenable number.

13366002728 is an abundant number, since it is smaller than the sum of its proper divisors (13623041452).

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

13366002728 is a wasteful number, since it uses less digits than its factorization.

13366002728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128519276 (or 128519272 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 13366002728 in words is "thirteen billion, three hundred sixty-six million, two thousand, seven hundred twenty-eight".