2118912 has 72 divisors (see below), whose sum is σ = 5886720. Its totient is φ = 675840.

The previous prime is 2118889. The next prime is 2118917. The reversal of 2118912 is 2198112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23764 + ... + 23852.

It is an arithmetic number, because the mean of its divisors is an integer number (81760).

2^2118912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2943360).

2118912 is an abundant number, since it is smaller than the sum of its proper divisors (3767808).

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

2118912 is an equidigital number, since it uses as much as digits as its factorization.

2118912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 125 counting only the distinct ones).

The product of its digits is 288, while the sum is 24.

The square root of 2118912 is about 1455.6483091736. The cubic root of 2118912 is about 128.4411859220.

2118912 divided by its sum of digits (24) gives a palindrome (88288).

The spelling of 2118912 in words is "two million, one hundred eighteen thousand, nine hundred twelve".