28081830136 has 16 divisors (see below), whose sum is σ = 52714740600. Its totient is φ = 14024565984.

The previous prime is 28081830089. The next prime is 28081830187. The reversal of 28081830136 is 63103818082.

It is a congruent number.

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, 2036335 + ... + 2050078.

Almost surely, 2^28081830136 is an apocalyptic number.

It is an amenable number.

28081830136 is a deficient number, since it is larger than the sum of its proper divisors (24632910464).

28081830136 is a wasteful number, since it uses less digits than its factorization.

28081830136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087278 (or 4087274 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 28081830136 in words is "twenty-eight billion, eighty-one million, eight hundred thirty thousand, one hundred thirty-six".