28683958831 has 6 divisors (see below), whose sum is σ = 31528649096. Its totient is φ = 26076326100.

The previous prime is 28683958819. The next prime is 28683958867. The reversal of 28683958831 is 13885938682.

It is not a de Polignac number, because 28683958831 - 2¹⁹ = 28683434543 is a prime.

It is a super-2 number, since 2×28683958831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28683958831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28683958801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118528635 + ... + 118528876.

Almost surely, 2^28683958831 is an apocalyptic number.

28683958831 is a deficient number, since it is larger than the sum of its proper divisors (2844690265).

28683958831 is a wasteful number, since it uses less digits than its factorization.

28683958831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237057533 (or 237057522 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 61.

The spelling of 28683958831 in words is "twenty-eight billion, six hundred eighty-three million, nine hundred fifty-eight thousand, eight hundred thirty-one".