28087678376178 has 32 divisors (see below), whose sum is σ = 56291532251136. Its totient is φ = 9343209832848.

The previous prime is 28087678376141. The next prime is 28087678376179. The reversal of 28087678376178 is 87167387678082.

It is not an unprimeable number, because it can be changed into a prime (28087678376179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060725 + ... + 10297047.

It is an arithmetic number, because the mean of its divisors is an integer number (1759110382848).

Almost surely, 2^{28087678376178} is an apocalyptic number.

28087678376178 is an abundant number, since it is smaller than the sum of its proper divisors (28203853874958).

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

28087678376178 is a wasteful number, since it uses less digits than its factorization.

28087678376178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239318.

The product of its (nonzero) digits is 2124251136, while the sum is 78.

The spelling of 28087678376178 in words is "twenty-eight trillion, eighty-seven billion, six hundred seventy-eight million, three hundred seventy-six thousand, one hundred seventy-eight".