28105119405 has 96 divisors (see below), whose sum is σ = 54942031872. Its totient is φ = 13167100800.

The previous prime is 28105119359. The next prime is 28105119433. The reversal of 28105119405 is 50491150182.

It is not a de Polignac number, because 28105119405 - 2⁸ = 28105119149 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28105119405.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 16310874 + ... + 16312596.

It is an arithmetic number, because the mean of its divisors is an integer number (572312832).

Almost surely, 2^28105119405 is an apocalyptic number.

It is an amenable number.

28105119405 is a deficient number, since it is larger than the sum of its proper divisors (26836912467).

28105119405 is a wasteful number, since it uses less digits than its factorization.

28105119405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

Adding to 28105119405 its reverse (50491150182), we get a palindrome (78596269587).

It can be divided in two parts, 2810 and 5119405, that added together give a palindrome (5122215).

The spelling of 28105119405 in words is "twenty-eight billion, one hundred five million, one hundred nineteen thousand, four hundred five".