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2198 = 27157
BaseRepresentation
bin100010010110
310000102
4202112
532243
614102
76260
oct4226
93012
102198
111719
121332
131001
14b30
159b8
hex896

2198 has 8 divisors (see below), whose sum is σ = 3792. Its totient is φ = 936.

The previous prime is 2179. The next prime is 2203. The reversal of 2198 is 8912.

2198 is nontrivially palindromic in base 13.

It is a Cunningham number, because it is equal to 133+1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

2198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65 + ... + 92.

It is an arithmetic number, because the mean of its divisors is an integer number (474).

2198 is a deficient number, since it is larger than the sum of its proper divisors (1594).

2198 is a wasteful number, since it uses less digits than its factorization.

2198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

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

The square root of 2198 is about 46.8828326789. The cubic root of 2198 is about 13.0019720874.

The spelling of 2198 in words is "two thousand, one hundred ninety-eight".

Divisors: 1 2 7 14 157 314 1099 2198