8186442 has 32 divisors (see below), whose sum is σ = 18123264. Its totient is φ = 2444400.

The previous prime is 8186441. The next prime is 8186447. The reversal of 8186442 is 2446818.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8186441) 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 15 ways as a sum of consecutive naturals, for example, 3813 + ... + 5559.

It is an arithmetic number, because the mean of its divisors is an integer number (566352).

Almost surely, 2^8186442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8186442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9061632).

8186442 is an abundant number, since it is smaller than the sum of its proper divisors (9936822).

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

8186442 is a wasteful number, since it uses less digits than its factorization.

8186442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its digits is 12288, while the sum is 33.

The square root of 8186442 is about 2861.1959038136. The cubic root of 8186442 is about 201.5417675569.

It can be divided in two parts, 818 and 6442, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 8186442 in words is "eight million, one hundred eighty-six thousand, four hundred forty-two".