28047320810880 has 1024 divisors, whose sum is σ = 114045810278400. Its totient is φ = 5707640733696.

The previous prime is 28047320810843. The next prime is 28047320810963. The reversal of 28047320810880 is 8801802374082.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3155989797 + ... + 3155998683.

It is an arithmetic number, because the mean of its divisors is an integer number (111372861600).

Almost surely, 2^{28047320810880} is an apocalyptic number.

28047320810880 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 28047320810880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57022905139200).

28047320810880 is an abundant number, since it is smaller than the sum of its proper divisors (85998489467520).

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

28047320810880 is a wasteful number, since it uses less digits than its factorization.

28047320810880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679 (or 9667 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 51.

The spelling of 28047320810880 in words is "twenty-eight trillion, forty-seven billion, three hundred twenty million, eight hundred ten thousand, eight hundred eighty".