22198 has 8 divisors (see below), whose sum is σ = 36360. Its totient is φ = 10080.

The previous prime is 22193. The next prime is 22229. The reversal of 22198 is 89122.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1009 = 22198 / (2 + 2 + 1 + 9 + 8).

22198 is a modest number, since divided by 198 gives 22 as remainder.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (4545).

2²²¹⁹⁸ is an apocalyptic number.

22198 is a deficient number, since it is larger than the sum of its proper divisors (14162).

22198 is a wasteful number, since it uses less digits than its factorization.

22198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

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

The square root of 22198 is about 148.9899325458. The cubic root of 22198 is about 28.1042035563.

It can be divided in two parts, 22 and 198, that multiplied together give a square (4356 = 66²).

The spelling of 22198 in words is "twenty-two thousand, one hundred ninety-eight".