2198790 has 48 divisors (see below), whose sum is σ = 6239376. Its totient is φ = 532800.

The previous prime is 2198783. The next prime is 2198827. The reversal of 2198790 is 978912.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (129987).

2^2198790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2198790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3119688).

2198790 is an abundant number, since it is smaller than the sum of its proper divisors (4040586).

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

2198790 is a wasteful number, since it uses less digits than its factorization.

2198790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2198790 is about 1482.8317504019. The cubic root of 2198790 is about 130.0352961358.

It can be divided in two parts, 219 and 8790, that added together give a palindrome (9009).

The spelling of 2198790 in words is "two million, one hundred ninety-eight thousand, seven hundred ninety".