12828870388 has 12 divisors (see below), whose sum is σ = 22451928772. Its totient is φ = 6414033600.

The previous prime is 12828870367. The next prime is 12828870403. The reversal of 12828870388 is 88307882821.

It can be written as a sum of positive squares in 2 ways, for example, as 2469294864 + 10359575524 = 49692^2 + 101782^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21663 + ... + 161638.

Almost surely, 2^12828870388 is an apocalyptic number.

It is an amenable number.

12828870388 is a deficient number, since it is larger than the sum of its proper divisors (9623058384).

12828870388 is a wasteful number, since it uses less digits than its factorization.

12828870388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200802 (or 200800 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 55.

The spelling of 12828870388 in words is "twelve billion, eight hundred twenty-eight million, eight hundred seventy thousand, three hundred eighty-eight".