28513604041 has 4 divisors (see below), whose sum is σ = 30706958212. Its totient is φ = 26320249872.

The previous prime is 28513604017. The next prime is 28513604051. The reversal of 28513604041 is 14040631582.

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 17504348416 + 11009255625 = 132304^2 + 104925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28513604041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28513603988 and 28513604006.

It is not an unprimeable number, because it can be changed into a prime (28513604051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096677066 + ... + 1096677091.

It is an arithmetic number, because the mean of its divisors is an integer number (7676739553).

Almost surely, 2^28513604041 is an apocalyptic number.

It is an amenable number.

28513604041 is a deficient number, since it is larger than the sum of its proper divisors (2193354171).

28513604041 is a wasteful number, since it uses less digits than its factorization.

28513604041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193354170.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 28513604041 in words is "twenty-eight billion, five hundred thirteen million, six hundred four thousand, forty-one".