28776213682336 has 24 divisors (see below), whose sum is σ = 58184337464820. Its totient is φ = 13999239088128.

The previous prime is 28776213682301. The next prime is 28776213682339. The reversal of 28776213682336 is 63328631267782.

It can be written as a sum of positive squares in 2 ways, for example, as 28540169290000 + 236044392336 = 5342300^2 + 485844^2 .

It is a super-2 number, since 2×28776213682336² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28776213682339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12152116081 + ... + 12152118448.

Almost surely, 2^{28776213682336} is an apocalyptic number.

It is an amenable number.

28776213682336 is an abundant number, since it is smaller than the sum of its proper divisors (29408123782484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28776213682336 is a wasteful number, since it uses less digits than its factorization.

28776213682336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24304234576 (or 24304234568 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 64.

The spelling of 28776213682336 in words is "twenty-eight trillion, seven hundred seventy-six billion, two hundred thirteen million, six hundred eighty-two thousand, three hundred thirty-six".