28076858166 has 32 divisors (see below), whose sum is σ = 64444216320. Its totient is φ = 7988391936.

The previous prime is 28076858153. The next prime is 28076858177. The reversal of 28076858166 is 66185867082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388491 + ... + 1408566.

It is an arithmetic number, because the mean of its divisors is an integer number (2013881760).

Almost surely, 2^28076858166 is an apocalyptic number.

28076858166 is an abundant number, since it is smaller than the sum of its proper divisors (36367358154).

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

28076858166 is a wasteful number, since it uses less digits than its factorization.

28076858166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797308.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 28076858166 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-eight thousand, one hundred sixty-six".