28334286505 has 12 divisors (see below), whose sum is σ = 39552351300. Its totient is φ = 19429224864.

The previous prime is 28334286443. The next prime is 28334286517. The reversal of 28334286505 is 50568243382.

It can be written as a sum of positive squares in 2 ways, for example, as 4538447424 + 23795839081 = 67368^2 + 154259^2 .

It is not a de Polignac number, because 28334286505 - 2¹⁵ = 28334253737 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 57824830 + ... + 57825319.

It is an arithmetic number, because the mean of its divisors is an integer number (3296029275).

Almost surely, 2^28334286505 is an apocalyptic number.

It is an amenable number.

28334286505 is a deficient number, since it is larger than the sum of its proper divisors (11218064795).

28334286505 is a wasteful number, since it uses less digits than its factorization.

28334286505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115650168 (or 115650161 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 28334286505 in words is "twenty-eight billion, three hundred thirty-four million, two hundred eighty-six thousand, five hundred five".