28628636927 has 8 divisors (see below), whose sum is σ = 32238700032. Its totient is φ = 25186483800.

The previous prime is 28628636873. The next prime is 28628636929. The reversal of 28628636927 is 72963682682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28628636927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28628636929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41977133 + ... + 41977814.

It is an arithmetic number, because the mean of its divisors is an integer number (4029837504).

Almost surely, 2^28628636927 is an apocalyptic number.

28628636927 is a deficient number, since it is larger than the sum of its proper divisors (3610063105).

28628636927 is a wasteful number, since it uses less digits than its factorization.

28628636927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83954989.

The product of its digits is 20901888, while the sum is 59.

The spelling of 28628636927 in words is "twenty-eight billion, six hundred twenty-eight million, six hundred thirty-six thousand, nine hundred twenty-seven".