28258110281 has 2 divisors, whose sum is σ = 28258110282. Its totient is φ = 28258110280.

The previous prime is 28258110203. The next prime is 28258110317. The reversal of 28258110281 is 18201185282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28195447225 + 62663056 = 167915^2 + 7916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28258110281 is a prime.

It is a super-2 number, since 2×28258110281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28258116281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14129055140 + 14129055141.

It is an arithmetic number, because the mean of its divisors is an integer number (14129055141).

Almost surely, 2^28258110281 is an apocalyptic number.

It is an amenable number.

28258110281 is a deficient number, since it is larger than the sum of its proper divisors (1).

28258110281 is an equidigital number, since it uses as much as digits as its factorization.

28258110281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20480, while the sum is 38.

The spelling of 28258110281 in words is "twenty-eight billion, two hundred fifty-eight million, one hundred ten thousand, two hundred eighty-one".