12808587428 has 24 divisors (see below), whose sum is σ = 27587727552. Its totient is φ = 5067133344.

The previous prime is 12808587419. The next prime is 12808587497. The reversal of 12808587428 is 82478580821.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12808587428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17593850 + ... + 17594577.

It is an arithmetic number, because the mean of its divisors is an integer number (1149488648).

Almost surely, 2^12808587428 is an apocalyptic number.

It is an amenable number.

12808587428 is an abundant number, since it is smaller than the sum of its proper divisors (14779140124).

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

12808587428 is a wasteful number, since it uses less digits than its factorization.

12808587428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35188451 (or 35188449 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 12808587428 in words is "twelve billion, eight hundred eight million, five hundred eighty-seven thousand, four hundred twenty-eight".