28966434813 has 32 divisors (see below), whose sum is σ = 44635852800. Its totient is φ = 18545295600.

The previous prime is 28966434797. The next prime is 28966434823. The reversal of 28966434813 is 31843466982.

28966434813 is a `hidden beast` number, since 289 + 6 + 6 + 4 + 348 + 13 = 666.

It is not a de Polignac number, because 28966434813 - 2⁴ = 28966434797 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 28966434813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28966434823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22443 + ... + 241736.

It is an arithmetic number, because the mean of its divisors is an integer number (1394870400).

Almost surely, 2^28966434813 is an apocalyptic number.

It is an amenable number.

28966434813 is a deficient number, since it is larger than the sum of its proper divisors (15669417987).

28966434813 is a wasteful number, since it uses less digits than its factorization.

28966434813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264350 (or 264344 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 28966434813 in words is "twenty-eight billion, nine hundred sixty-six million, four hundred thirty-four thousand, eight hundred thirteen".