28689481814 has 16 divisors (see below), whose sum is σ = 49988232096. Its totient is φ = 12093926400.

The previous prime is 28689481811. The next prime is 28689481853. The reversal of 28689481814 is 41818498682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28689481811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16796267 + ... + 16797974.

It is an arithmetic number, because the mean of its divisors is an integer number (3124264506).

Almost surely, 2^28689481814 is an apocalyptic number.

28689481814 is a deficient number, since it is larger than the sum of its proper divisors (21298750282).

28689481814 is a wasteful number, since it uses less digits than its factorization.

28689481814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33594311.

The product of its digits is 7077888, while the sum is 59.

The spelling of 28689481814 in words is "twenty-eight billion, six hundred eighty-nine million, four hundred eighty-one thousand, eight hundred fourteen".