28068973536256 has 99 divisors (see below), whose sum is σ = 59611430730369. Its totient is φ = 13207572430848.

The previous prime is 28068973536193. The next prime is 28068973536269. The reversal of 28068973536256 is 65263537986082.

The square root of 28068973536256 is 5298016.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21853007078400 + 6215966457856 = 4674720^2 + 2493184^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2882115835 + ... + 2882125573.

Almost surely, 2^{28068973536256} is an apocalyptic number.

28068973536256 is the 5298016-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28068973536256

28068973536256 is an abundant number, since it is smaller than the sum of its proper divisors (31542457194113).

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

28068973536256 is an frugal number, since it uses more digits than its factorization.

28068973536256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532 (or 9758 counting only the distinct ones).

The product of its (nonzero) digits is 783820800, while the sum is 70.

The spelling of 28068973536256 in words is "twenty-eight trillion, sixty-eight billion, nine hundred seventy-three million, five hundred thirty-six thousand, two hundred fifty-six".