2109198 has 32 divisors (see below), whose sum is σ = 5193216. Its totient is φ = 556128.

The previous prime is 2109179. The next prime is 2109203. The reversal of 2109198 is 8919012.

It is a congruent number.

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, 1386 + ... + 2477.

It is an arithmetic number, because the mean of its divisors is an integer number (162288).

2^2109198 is an apocalyptic number.

2109198 is an abundant number, since it is smaller than the sum of its proper divisors (3084018).

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

2109198 is a wasteful number, since it uses less digits than its factorization.

2109198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 2109198 is about 1452.3078186115. The cubic root of 2109198 is about 128.2446087509.

The spelling of 2109198 in words is "two million, one hundred nine thousand, one hundred ninety-eight".