28779286756 has 24 divisors (see below), whose sum is σ = 54970092576. Its totient is φ = 13074870720.

The previous prime is 28779286747. The next prime is 28779286793. The reversal of 28779286756 is 65768297782.

It is a super-3 number, since 3×28779286756³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28779286691 and 28779286700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77161 + ... + 252016.

It is an arithmetic number, because the mean of its divisors is an integer number (2290420524).

Almost surely, 2^28779286756 is an apocalyptic number.

It is an amenable number.

28779286756 is a deficient number, since it is larger than the sum of its proper divisors (26190805820).

28779286756 is a wasteful number, since it uses less digits than its factorization.

28779286756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331179 (or 331177 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 67.

The spelling of 28779286756 in words is "twenty-eight billion, seven hundred seventy-nine million, two hundred eighty-six thousand, seven hundred fifty-six".