28608849918 has 160 divisors (see below), whose sum is σ = 70820719200. Its totient is φ = 8560131840.

The previous prime is 28608849889. The next prime is 28608849931. The reversal of 28608849918 is 81994880682.

28608849918 is a `hidden beast` number, since 2 + 8 + 60 + 88 + 499 + 1 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 81973608 + ... + 81973956.

It is an arithmetic number, because the mean of its divisors is an integer number (442629495).

Almost surely, 2^28608849918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28608849918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35410359600).

28608849918 is an abundant number, since it is smaller than the sum of its proper divisors (42211869282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28608849918 is a wasteful number, since it uses less digits than its factorization.

28608849918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 28608849918 in words is "twenty-eight billion, six hundred eight million, eight hundred forty-nine thousand, nine hundred eighteen".