28718008005 has 16 divisors (see below), whose sum is σ = 47431033344. Its totient is φ = 14822197440.

The previous prime is 28718008003. The next prime is 28718008049. The reversal of 28718008005 is 50080081782.

It is not a de Polignac number, because 28718008005 - 2¹ = 28718008003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28718008003) 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 in 15 ways as a sum of consecutive naturals, for example, 30879114 + ... + 30880043.

It is an arithmetic number, because the mean of its divisors is an integer number (2964439584).

Almost surely, 2^28718008005 is an apocalyptic number.

It is an amenable number.

28718008005 is a deficient number, since it is larger than the sum of its proper divisors (18713025339).

28718008005 is a wasteful number, since it uses less digits than its factorization.

28718008005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61759196.

The product of its (nonzero) digits is 35840, while the sum is 39.

Adding to 28718008005 its reverse (50080081782), we get a palindrome (78798089787).

The spelling of 28718008005 in words is "twenty-eight billion, seven hundred eighteen million, eight thousand, five".