28166866182 has 64 divisors (see below), whose sum is σ = 77037596160. Its totient is φ = 7428622752.

The previous prime is 28166866181. The next prime is 28166866183.

28166866182 is a `hidden beast` number, since 2 + 8 + 16 + 6 + 8 + 6 + 618 + 2 = 666.

28166866182 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (28166866181) and next prime (28166866183).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28166866181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2861068 + ... + 2870895.

It is an arithmetic number, because the mean of its divisors is an integer number (1203712440).

Almost surely, 2^28166866182 is an apocalyptic number.

28166866182 is an abundant number, since it is smaller than the sum of its proper divisors (48870729978).

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

28166866182 is a wasteful number, since it uses less digits than its factorization.

28166866182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731994 (or 5731988 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 28166866182 in words is "twenty-eight billion, one hundred sixty-six million, eight hundred sixty-six thousand, one hundred eighty-two".