2686138 has 16 divisors (see below), whose sum is σ = 4959360. Its totient is φ = 1062576.

The previous prime is 2686133. The next prime is 2686141. The reversal of 2686138 is 8316862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686133) 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 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

2^2686138 is an apocalyptic number.

2686138 is a deficient number, since it is larger than the sum of its proper divisors (2273222).

2686138 is a wasteful number, since it uses less digits than its factorization.

2686138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14781.

The product of its digits is 13824, while the sum is 34.

The square root of 2686138 is about 1638.9441723256. The cubic root of 2686138 is about 139.0089534112.

Adding to 2686138 its product of digits (13824), we get a palindrome (2699962).

The spelling of 2686138 in words is "two million, six hundred eighty-six thousand, one hundred thirty-eight".