28669696682 has 48 divisors (see below), whose sum is σ = 50171929416. Its totient is φ = 12235238400.

The previous prime is 28669696639. The next prime is 28669696697.

It is a happy number.

28669696682 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 25972867921 + 2696828761 = 161161^2 + 51931^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1723718 + ... + 1740270.

Almost surely, 2^28669696682 is an apocalyptic number.

28669696682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28669696682 is a deficient number, since it is larger than the sum of its proper divisors (21502232734).

28669696682 is a wasteful number, since it uses less digits than its factorization.

28669696682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17015 (or 17004 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 68.

The spelling of 28669696682 in words is "twenty-eight billion, six hundred sixty-nine million, six hundred ninety-six thousand, six hundred eighty-two".