28848335221 has 2 divisors, whose sum is σ = 28848335222. Its totient is φ = 28848335220.

The previous prime is 28848335177. The next prime is 28848335239. The reversal of 28848335221 is 12253384882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26345834596 + 2502500625 = 162314^2 + 50025^2 .

It is a cyclic number.

It is not a de Polignac number, because 28848335221 - 2¹³ = 28848327029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28848335261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424167610 + 14424167611.

It is an arithmetic number, because the mean of its divisors is an integer number (14424167611).

Almost surely, 2^28848335221 is an apocalyptic number.

It is an amenable number.

28848335221 is a deficient number, since it is larger than the sum of its proper divisors (1).

28848335221 is an equidigital number, since it uses as much as digits as its factorization.

28848335221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 46.

The spelling of 28848335221 in words is "twenty-eight billion, eight hundred forty-eight million, three hundred thirty-five thousand, two hundred twenty-one".