2187198 has 36 divisors (see below), whose sum is σ = 5138640. Its totient is φ = 672048.

The previous prime is 2187197. The next prime is 2187217. The reversal of 2187198 is 8917812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187193) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2683 + ... + 3401.

It is an arithmetic number, because the mean of its divisors is an integer number (142740).

2^2187198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2187198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2569320).

2187198 is an abundant number, since it is smaller than the sum of its proper divisors (2951442).

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

2187198 is a wasteful number, since it uses less digits than its factorization.

2187198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 737 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 2187198 is about 1478.9178476170. The cubic root of 2187198 is about 129.8063784305.

The spelling of 2187198 in words is "two million, one hundred eighty-seven thousand, one hundred ninety-eight".