28047347712 has 416 divisors, whose sum is σ = 87692190720. Its totient is φ = 8957952000.

The previous prime is 28047347701. The next prime is 28047347737. The reversal of 28047347712 is 21774374082.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277696462 + ... + 277696562.

Almost surely, 2^28047347712 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 28047347712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43846095360).

28047347712 is an abundant number, since it is smaller than the sum of its proper divisors (59644843008).

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

28047347712 is an frugal number, since it uses more digits than its factorization.

28047347712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 28047347712 in words is "twenty-eight billion, forty-seven million, three hundred forty-seven thousand, seven hundred twelve".