28885452218 has 16 divisors (see below), whose sum is σ = 49567018560. Its totient is φ = 12367204416.

The previous prime is 28885452209. The next prime is 28885452293. The reversal of 28885452218 is 81225458882.

It is a super-2 number, since 2×28885452218² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28885452218.

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 7 ways as a sum of consecutive naturals, for example, 1008296 + ... + 1036547.

It is an arithmetic number, because the mean of its divisors is an integer number (3097938660).

Almost surely, 2^28885452218 is an apocalyptic number.

28885452218 is a deficient number, since it is larger than the sum of its proper divisors (20681566342).

28885452218 is a wasteful number, since it uses less digits than its factorization.

28885452218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045861.

The product of its digits is 3276800, while the sum is 53.

The spelling of 28885452218 in words is "twenty-eight billion, eight hundred eighty-five million, four hundred fifty-two thousand, two hundred eighteen".