28116506882 has 8 divisors (see below), whose sum is σ = 42283179900. Its totient is φ = 14022113584.

The previous prime is 28116506881. The next prime is 28116506903. The reversal of 28116506882 is 28860561182.

It can be written as a sum of positive squares in 2 ways, for example, as 26726037361 + 1390469521 = 163481^2 + 37289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28116506881) 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 3 ways as a sum of consecutive naturals, for example, 18068957 + ... + 18070512.

Almost surely, 2^28116506882 is an apocalyptic number.

28116506882 is a deficient number, since it is larger than the sum of its proper divisors (14166673018).

28116506882 is a wasteful number, since it uses less digits than its factorization.

28116506882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36139860.

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 28116506882 in words is "twenty-eight billion, one hundred sixteen million, five hundred six thousand, eight hundred eighty-two".