2218900 has 18 divisors (see below), whose sum is σ = 4815230. Its totient is φ = 887520.

The previous prime is 2218897. The next prime is 2218901. The reversal of 2218900 is 98122.

2218900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 242064 + 1976836 = 492^2 + 1406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10995 + ... + 11194.

2^2218900 is an apocalyptic number.

2218900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218900 is an abundant number, since it is smaller than the sum of its proper divisors (2596330).

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

2218900 is a wasteful number, since it uses less digits than its factorization.

2218900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22203 (or 22196 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2218900 is about 1489.5972610071. The cubic root of 2218900 is about 130.4305253039.

The spelling of 2218900 in words is "two million, two hundred eighteen thousand, nine hundred".