28858885481 has 2 divisors, whose sum is σ = 28858885482. Its totient is φ = 28858885480.

The previous prime is 28858885403. The next prime is 28858885529. The reversal of 28858885481 is 18458885882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15435577600 + 13423307881 = 124240^2 + 115859^2 .

It is a cyclic number.

It is not a de Polignac number, because 28858885481 - 2²⁶ = 28791776617 is a prime.

It is a super-2 number, since 2×28858885481² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28858885981) 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 as a sum of consecutive naturals, namely, 14429442740 + 14429442741.

It is an arithmetic number, because the mean of its divisors is an integer number (14429442741).

Almost surely, 2^28858885481 is an apocalyptic number.

It is an amenable number.

28858885481 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858885481 is an equidigital number, since it uses as much as digits as its factorization.

28858885481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52428800, while the sum is 65.

The spelling of 28858885481 in words is "twenty-eight billion, eight hundred fifty-eight million, eight hundred eighty-five thousand, four hundred eighty-one".