2028271317256 has 8 divisors (see below), whose sum is σ = 3803008719870. Its totient is φ = 1014135658624.

The previous prime is 2028271317187. The next prime is 2028271317257. The reversal of 2028271317256 is 6527131728202.

It can be written as a sum of positive squares in only one way, i.e., 1596346333156 + 431924984100 = 1263466^2 + 657210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2028271317256² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2028271317257) by changing a digit.

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 as a sum of consecutive naturals, namely, 126766957321 + ... + 126766957336.

Almost surely, 2^{2028271317256} is an apocalyptic number.

It is an amenable number.

2028271317256 is a deficient number, since it is larger than the sum of its proper divisors (1774737402614).

2028271317256 is a wasteful number, since it uses less digits than its factorization.

2028271317256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253533914663 (or 253533914659 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 2028271317256 in words is "two trillion, twenty-eight billion, two hundred seventy-one million, three hundred seventeen thousand, two hundred fifty-six".