2217198 has 16 divisors (see below), whose sum is σ = 4543056. Its totient is φ = 720960.

The previous prime is 2217181. The next prime is 2217199. The reversal of 2217198 is 8917122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4261 + ... + 4752.

It is an arithmetic number, because the mean of its divisors is an integer number (283941).

2^2217198 is an apocalyptic number.

2217198 is an abundant number, since it is smaller than the sum of its proper divisors (2325858).

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

2217198 is a wasteful number, since it uses less digits than its factorization.

2217198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9059.

The product of its digits is 2016, while the sum is 30.

The square root of 2217198 is about 1489.0258560549. The cubic root of 2217198 is about 130.3971680040.

It can be divided in two parts, 2217 and 198, that added together give a triangular number (2415 = T₆₉).

The spelling of 2217198 in words is "two million, two hundred seventeen thousand, one hundred ninety-eight".