28806085560 has 128 divisors (see below), whose sum is σ = 99116006400. Its totient is φ = 6560762880.

The previous prime is 28806085559. The next prime is 28806085603. The reversal of 28806085560 is 6558060882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175021 + ... + 297059.

It is an arithmetic number, because the mean of its divisors is an integer number (774343800).

Almost surely, 2^28806085560 is an apocalyptic number.

28806085560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28806085560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49558003200).

28806085560 is an abundant number, since it is smaller than the sum of its proper divisors (70309920840).

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

28806085560 is a wasteful number, since it uses less digits than its factorization.

28806085560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122341 (or 122337 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 28806085560 in words is "twenty-eight billion, eight hundred six million, eighty-five thousand, five hundred sixty".