28688246488 has 64 divisors (see below), whose sum is σ = 59208589440. Its totient is φ = 12923040000.

The previous prime is 28688246467. The next prime is 28688246527. The reversal of 28688246488 is 88464288682.

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, 12575908 + ... + 12578188.

It is an arithmetic number, because the mean of its divisors is an integer number (925134210).

Almost surely, 2^28688246488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28688246488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29604294720).

28688246488 is an abundant number, since it is smaller than the sum of its proper divisors (30520342952).

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

28688246488 is a wasteful number, since it uses less digits than its factorization.

28688246488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520 (or 3516 counting only the distinct ones).

The product of its digits is 75497472, while the sum is 64.

The spelling of 28688246488 in words is "twenty-eight billion, six hundred eighty-eight million, two hundred forty-six thousand, four hundred eighty-eight".