28256267075 has 6 divisors (see below), whose sum is σ = 35037771204. Its totient is φ = 22605013640.

The previous prime is 28256267071. The next prime is 28256267077. The reversal of 28256267075 is 57076265282.

It is not a de Polignac number, because 28256267075 - 2² = 28256267071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28256267071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565125317 + ... + 565125366.

It is an arithmetic number, because the mean of its divisors is an integer number (5839628534).

Almost surely, 2^28256267075 is an apocalyptic number.

28256267075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28256267075 is a deficient number, since it is larger than the sum of its proper divisors (6781504129).

28256267075 is a wasteful number, since it uses less digits than its factorization.

28256267075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130250693 (or 1130250688 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 28256267075 in words is "twenty-eight billion, two hundred fifty-six million, two hundred sixty-seven thousand, seventy-five".