28512889986748 has 12 divisors (see below), whose sum is σ = 49897660045240. Its totient is φ = 14256415688112.

The previous prime is 28512889986683. The next prime is 28512889986803. The reversal of 28512889986748 is 84768998821582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5059203 + ... + 9089626.

Almost surely, 2^{28512889986748} is an apocalyptic number.

It is an amenable number.

28512889986748 is a deficient number, since it is larger than the sum of its proper divisors (21384770058492).

28512889986748 is a wasteful number, since it uses less digits than its factorization.

28512889986748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14652636 (or 14652634 counting only the distinct ones).

The product of its digits is 8918138880, while the sum is 85.

The spelling of 28512889986748 in words is "twenty-eight trillion, five hundred twelve billion, eight hundred eighty-nine million, nine hundred eighty-six thousand, seven hundred forty-eight".