28516708560 has 80 divisors (see below), whose sum is σ = 90282721536. Its totient is φ = 7442655744.

The previous prime is 28516708553. The next prime is 28516708573. The reversal of 28516708560 is 6580761582.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 1252759 + ... + 1275318.

Almost surely, 2^28516708560 is an apocalyptic number.

28516708560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28516708560 is an abundant number, since it is smaller than the sum of its proper divisors (61766012976).

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

28516708560 is a wasteful number, since it uses less digits than its factorization.

28516708560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528140 (or 2528134 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 28516708560 in words is "twenty-eight billion, five hundred sixteen million, seven hundred eight thousand, five hundred sixty".