2189000 has 64 divisors (see below), whose sum is σ = 5616000. Its totient is φ = 792000.

The previous prime is 2188993. The next prime is 2189017. The reversal of 2189000 is 9812.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10901 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (87750).

2^2189000 is an apocalyptic number.

2189000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2808000).

2189000 is an abundant number, since it is smaller than the sum of its proper divisors (3427000).

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

2189000 is a wasteful number, since it uses less digits than its factorization.

2189000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2189000 is about 1479.5269514274. The cubic root of 2189000 is about 129.8420171617.

The spelling of 2189000 in words is "two million, one hundred eighty-nine thousand".