28186552118 has 16 divisors (see below), whose sum is σ = 44154067680. Its totient is φ = 13469529216.

The previous prime is 28186552087. The next prime is 28186552133. The reversal of 28186552118 is 81125568182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192755 + ... + 305822.

It is an arithmetic number, because the mean of its divisors is an integer number (2759629230).

Almost surely, 2^28186552118 is an apocalyptic number.

28186552118 is a deficient number, since it is larger than the sum of its proper divisors (15967515562).

28186552118 is a wasteful number, since it uses less digits than its factorization.

28186552118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499831.

The product of its digits is 307200, while the sum is 47.

The spelling of 28186552118 in words is "twenty-eight billion, one hundred eighty-six million, five hundred fifty-two thousand, one hundred eighteen".