28050555305 has 12 divisors (see below), whose sum is σ = 35757180300. Its totient is φ = 21120417024.

The previous prime is 28050555301. The next prime is 28050555307. The reversal of 28050555305 is 50355505082.

It can be written as a sum of positive squares in 6 ways, for example, as 16 + 28050555289 = 4^2 + 167483^2 .

It is not a de Polignac number, because 28050555305 - 2² = 28050555301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28050555301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9704630 + ... + 9707519.

It is an arithmetic number, because the mean of its divisors is an integer number (2979765025).

Almost surely, 2^28050555305 is an apocalyptic number.

It is an amenable number.

28050555305 is a deficient number, since it is larger than the sum of its proper divisors (7706624995).

28050555305 is a wasteful number, since it uses less digits than its factorization.

28050555305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19412188 (or 19412171 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 28050555305 in words is "twenty-eight billion, fifty million, five hundred fifty-five thousand, three hundred five".