28858885880 has 64 divisors (see below), whose sum is σ = 71892766080. Its totient is φ = 10337500800.

The previous prime is 28858885751. The next prime is 28858885897. The reversal of 28858885880 is 8858885882.

It is a self number, because there is not a number n which added to its sum of digits gives 28858885880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459986 + ... + 518945.

It is an arithmetic number, because the mean of its divisors is an integer number (1123324470).

Almost surely, 2^28858885880 is an apocalyptic number.

28858885880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28858885880 is an abundant number, since it is smaller than the sum of its proper divisors (43033880200).

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

28858885880 is a wasteful number, since it uses less digits than its factorization.

28858885880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979020 (or 979016 counting only the distinct ones).

The product of its (nonzero) digits is 104857600, while the sum is 68.

The spelling of 28858885880 in words is "twenty-eight billion, eight hundred fifty-eight million, eight hundred eighty-five thousand, eight hundred eighty".