2118444 has 12 divisors (see below), whose sum is σ = 4943064. Its totient is φ = 706144.

The previous prime is 2118437. The next prime is 2118449. The reversal of 2118444 is 4448112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2118444² = 8975609962272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2118449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88257 + ... + 88280.

It is an arithmetic number, because the mean of its divisors is an integer number (411922).

2^2118444 is an apocalyptic number.

It is an amenable number.

2118444 is an abundant number, since it is smaller than the sum of its proper divisors (2824620).

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

2118444 is a wasteful number, since it uses less digits than its factorization.

2118444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176544 (or 176542 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 2118444 is about 1455.4875471814. The cubic root of 2118444 is about 128.4317290402.

The spelling of 2118444 in words is "two million, one hundred eighteen thousand, four hundred forty-four".