28679644676 has 6 divisors (see below), whose sum is σ = 50189378190. Its totient is φ = 14339822336.

The previous prime is 28679644673. The next prime is 28679644703. The reversal of 28679644676 is 67644697682.

It can be written as a sum of positive squares in only one way, i.e., 27747563776 + 932080900 = 166576^2 + 30530^2 .

It is not an unprimeable number, because it can be changed into a prime (28679644673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3584955581 + ... + 3584955588.

It is an arithmetic number, because the mean of its divisors is an integer number (8364896365).

Almost surely, 2^28679644676 is an apocalyptic number.

It is an amenable number.

28679644676 is a deficient number, since it is larger than the sum of its proper divisors (21509733514).

28679644676 is a wasteful number, since it uses less digits than its factorization.

28679644676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169911173 (or 7169911171 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 65.

The spelling of 28679644676 in words is "twenty-eight billion, six hundred seventy-nine million, six hundred forty-four thousand, six hundred seventy-six".