2188180 has 24 divisors (see below), whose sum is σ = 4720968. Its totient is φ = 851328.

The previous prime is 2188171. The next prime is 2188181. The reversal of 2188180 is 818812.

It can be written as a sum of positive squares in 4 ways, for example, as 300304 + 1887876 = 548^2 + 1374^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188181) 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, 739 + ... + 2218.

It is an arithmetic number, because the mean of its divisors is an integer number (196707).

2^2188180 is an apocalyptic number.

2188180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2188180 is the 740-th decagonal number.

It is an amenable number.

2188180 is an abundant number, since it is smaller than the sum of its proper divisors (2532788).

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

2188180 is a wasteful number, since it uses less digits than its factorization.

2188180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003 (or 3001 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 2188180 is about 1479.2498098699. The cubic root of 2188180 is about 129.8258021851.

The spelling of 2188180 in words is "two million, one hundred eighty-eight thousand, one hundred eighty".