28088080860 has 72 divisors (see below), whose sum is σ = 91486901520. Its totient is φ = 6420132096.

The previous prime is 28088080847. The next prime is 28088080871. The reversal of 28088080860 is 6808088082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4773945 + ... + 4779824.

It is an arithmetic number, because the mean of its divisors is an integer number (1270651410).

Almost surely, 2^28088080860 is an apocalyptic number.

28088080860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28088080860 is an abundant number, since it is smaller than the sum of its proper divisors (63398820660).

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

28088080860 is a wasteful number, since it uses less digits than its factorization.

28088080860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9553795 (or 9553786 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 48.

The spelling of 28088080860 in words is "twenty-eight billion, eighty-eight million, eighty thousand, eight hundred sixty".