28086389166 has 64 divisors (see below), whose sum is σ = 62456832000. Its totient is φ = 8348709600.

The previous prime is 28086389153. The next prime is 28086389179. The reversal of 28086389166 is 66198368082.

It is an interprime number because it is at equal distance from previous prime (28086389153) and next prime (28086389179).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917455 + ... + 947573.

It is an arithmetic number, because the mean of its divisors is an integer number (975888000).

Almost surely, 2^28086389166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28086389166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31228416000).

28086389166 is an abundant number, since it is smaller than the sum of its proper divisors (34370442834).

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

28086389166 is a wasteful number, since it uses less digits than its factorization.

28086389166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30405.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 28086389166 in words is "twenty-eight billion, eighty-six million, three hundred eighty-nine thousand, one hundred sixty-six".