28603830681 has 48 divisors (see below), whose sum is σ = 43442380800. Its totient is φ = 18111050496.

The previous prime is 28603830637. The next prime is 28603830701. The reversal of 28603830681 is 18603830682.

28603830681 is a `hidden beast` number, since 2 + 8 + 603 + 8 + 30 + 6 + 8 + 1 = 666.

It is not a de Polignac number, because 28603830681 - 2¹¹ = 28603828633 is a prime.

It is a super-2 number, since 2×28603830681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28603830181) 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 47 ways as a sum of consecutive naturals, for example, 7981416 + ... + 7984998.

It is an arithmetic number, because the mean of its divisors is an integer number (905049600).

Almost surely, 2^28603830681 is an apocalyptic number.

It is an amenable number.

28603830681 is a deficient number, since it is larger than the sum of its proper divisors (14838550119).

28603830681 is a wasteful number, since it uses less digits than its factorization.

28603830681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

Subtracting from 28603830681 its reverse (18603830682), we obtain a palindrome (9999999999).

The spelling of 28603830681 in words is "twenty-eight billion, six hundred three million, eight hundred thirty thousand, six hundred eighty-one".