28586843816 has 16 divisors (see below), whose sum is σ = 56753293140. Its totient is φ = 13452632320.

The previous prime is 28586843809. The next prime is 28586843821. The reversal of 28586843816 is 61834868582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27176841316 + 1410002500 = 164854^2 + 37550^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105098555 + ... + 105098826.

Almost surely, 2^28586843816 is an apocalyptic number.

It is an amenable number.

28586843816 is a deficient number, since it is larger than the sum of its proper divisors (28166449324).

28586843816 is a wasteful number, since it uses less digits than its factorization.

28586843816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210197404 (or 210197400 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 59.

The spelling of 28586843816 in words is "twenty-eight billion, five hundred eighty-six million, eight hundred forty-three thousand, eight hundred sixteen".