28694676799 has 4 divisors (see below), whose sum is σ = 28920619264. Its totient is φ = 28468734336.

The previous prime is 28694676797. The next prime is 28694676877. The reversal of 28694676799 is 99767649682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99767649682 = 2 ⋅49883824841.

It is a cyclic number.

It is not a de Polignac number, because 28694676799 - 2¹ = 28694676797 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 (28694676797) 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, 112971042 + ... + 112971295.

It is an arithmetic number, because the mean of its divisors is an integer number (7230154816).

Almost surely, 2^28694676799 is an apocalyptic number.

28694676799 is a deficient number, since it is larger than the sum of its proper divisors (225942465).

28694676799 is a wasteful number, since it uses less digits than its factorization.

28694676799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225942464.

The product of its digits is 493807104, while the sum is 73.

The spelling of 28694676799 in words is "twenty-eight billion, six hundred ninety-four million, six hundred seventy-six thousand, seven hundred ninety-nine".