2189100 has 36 divisors (see below), whose sum is σ = 6334664. Its totient is φ = 583680.

The previous prime is 2189081. The next prime is 2189101. The reversal of 2189100 is 19812.

It is not an unprimeable number, because it can be changed into a prime (2189101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3349 + ... + 3948.

2^2189100 is an apocalyptic number.

2189100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189100 is an abundant number, since it is smaller than the sum of its proper divisors (4145564).

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

2189100 is a wasteful number, since it uses less digits than its factorization.

2189100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314 (or 7307 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2189100 is about 1479.5607456269. The cubic root of 2189100 is about 129.8439943208.

The spelling of 2189100 in words is "two million, one hundred eighty-nine thousand, one hundred".