28534076605 has 4 divisors (see below), whose sum is σ = 34240891932. Its totient is φ = 22827261280.

The previous prime is 28534076569. The next prime is 28534076609. The reversal of 28534076605 is 50667043582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3296941561 + 25237135044 = 57419^2 + 158862^2 .

It is not a de Polignac number, because 28534076605 - 2¹¹ = 28534074557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28534076609) 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 3 ways as a sum of consecutive naturals, for example, 2853407656 + ... + 2853407665.

It is an arithmetic number, because the mean of its divisors is an integer number (8560222983).

Almost surely, 2^28534076605 is an apocalyptic number.

It is an amenable number.

28534076605 is a deficient number, since it is larger than the sum of its proper divisors (5706815327).

28534076605 is an equidigital number, since it uses as much as digits as its factorization.

28534076605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706815326.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 28534076605 in words is "twenty-eight billion, five hundred thirty-four million, seventy-six thousand, six hundred five".