2118726 has 24 divisors (see below), whose sum is σ = 4739904. Its totient is φ = 683280.

The previous prime is 2118703. The next prime is 2118733. The reversal of 2118726 is 6278112.

It is a self number, because there is not a number n which added to its sum of digits gives 2118726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1341 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (197496).

2^2118726 is an apocalyptic number.

2118726 is an abundant number, since it is smaller than the sum of its proper divisors (2621178).

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

2118726 is a wasteful number, since it uses less digits than its factorization.

2118726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836 (or 3833 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2118726 is about 1455.5844187130. The cubic root of 2118726 is about 128.4374275845.

The spelling of 2118726 in words is "two million, one hundred eighteen thousand, seven hundred twenty-six".