28256376751 has 16 divisors (see below), whose sum is σ = 29757470400. Its totient is φ = 26791833600.

The previous prime is 28256376749. The next prime is 28256376791. The reversal of 28256376751 is 15767365282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28256376751 - 2¹ = 28256376749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28256376791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121470 + ... + 1146388.

It is an arithmetic number, because the mean of its divisors is an integer number (1859841900).

Almost surely, 2^28256376751 is an apocalyptic number.

28256376751 is a deficient number, since it is larger than the sum of its proper divisors (1501093649).

28256376751 is a wasteful number, since it uses less digits than its factorization.

28256376751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25650.

The product of its digits is 4233600, while the sum is 52.

The spelling of 28256376751 in words is "twenty-eight billion, two hundred fifty-six million, three hundred seventy-six thousand, seven hundred fifty-one".