28186060044 has 24 divisors (see below), whose sum is σ = 69636148848. Its totient is φ = 8842685440.

The previous prime is 28186060013. The next prime is 28186060057. The reversal of 28186060044 is 44006068182.

It is a junction number, because it is equal to n+sod(n) for n = 28186059984 and 28186060011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69083277 + ... + 69083684.

It is an arithmetic number, because the mean of its divisors is an integer number (2901506202).

Almost surely, 2^28186060044 is an apocalyptic number.

It is an amenable number.

28186060044 is an abundant number, since it is smaller than the sum of its proper divisors (41450088804).

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

28186060044 is a wasteful number, since it uses less digits than its factorization.

28186060044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138166985 (or 138166983 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 28186060044 in words is "twenty-eight billion, one hundred eighty-six million, sixty thousand, forty-four".