28208583485 has 4 divisors (see below), whose sum is σ = 33850300188. Its totient is φ = 22566866784.

The previous prime is 28208583457. The next prime is 28208583499. The reversal of 28208583485 is 58438580282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21013981444 + 7194602041 = 144962^2 + 84821^2 .

It is a cyclic number.

It is not a de Polignac number, because 28208583485 - 2⁶ = 28208583421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2820858344 + ... + 2820858353.

It is an arithmetic number, because the mean of its divisors is an integer number (8462575047).

Almost surely, 2^28208583485 is an apocalyptic number.

It is an amenable number.

28208583485 is a deficient number, since it is larger than the sum of its proper divisors (5641716703).

28208583485 is an equidigital number, since it uses as much as digits as its factorization.

28208583485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641716702.

The product of its (nonzero) digits is 4915200, while the sum is 53.

The spelling of 28208583485 in words is "twenty-eight billion, two hundred eight million, five hundred eighty-three thousand, four hundred eighty-five".