28140460705 has 16 divisors (see below), whose sum is σ = 38794696704. Its totient is φ = 19195283520.

The previous prime is 28140460681. The next prime is 28140460721. The reversal of 28140460705 is 50706404182.

It is not a de Polignac number, because 28140460705 - 2¹¹ = 28140458657 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 2098062 + ... + 2111431.

It is an arithmetic number, because the mean of its divisors is an integer number (2424668544).

Almost surely, 2^28140460705 is an apocalyptic number.

It is an amenable number.

28140460705 is a deficient number, since it is larger than the sum of its proper divisors (10654235999).

28140460705 is a wasteful number, since it uses less digits than its factorization.

28140460705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209696.

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 28140460705 its reverse (50706404182), we get a palindrome (78846864887).

The spelling of 28140460705 in words is "twenty-eight billion, one hundred forty million, four hundred sixty thousand, seven hundred five".