28084012178 has 16 divisors (see below), whose sum is σ = 43027593984. Its totient is φ = 13741554240.

The previous prime is 28084012171. The next prime is 28084012199. The reversal of 28084012178 is 87121048082.

It is not an unprimeable number, because it can be changed into a prime (28084012171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138451 + ... + 1162857.

It is an arithmetic number, because the mean of its divisors is an integer number (2689224624).

Almost surely, 2^28084012178 is an apocalyptic number.

28084012178 is a deficient number, since it is larger than the sum of its proper divisors (14943581806).

28084012178 is a wasteful number, since it uses less digits than its factorization.

28084012178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697.

The product of its (nonzero) digits is 57344, while the sum is 41.

The spelling of 28084012178 in words is "twenty-eight billion, eighty-four million, twelve thousand, one hundred seventy-eight".