2188120 has 32 divisors (see below), whose sum is σ = 5371920. Its totient is φ = 795520.

The previous prime is 2188117. The next prime is 2188127. The reversal of 2188120 is 218812.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2188091 and 2188100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047 + ... + 2926.

2^2188120 is an apocalyptic number.

2188120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2188120 is an abundant number, since it is smaller than the sum of its proper divisors (3183800).

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

2188120 is a wasteful number, since it uses less digits than its factorization.

2188120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2188120 is about 1479.2295291806. The cubic root of 2188120 is about 129.8246155643.

It can be divided in two parts, 218 and 8120, that added together give a palindrome (8338).

The spelling of 2188120 in words is "two million, one hundred eighty-eight thousand, one hundred twenty".