2197844 has 36 divisors (see below), whose sum is σ = 4468800. Its totient is φ = 942480.

The previous prime is 2197799. The next prime is 2197847. The reversal of 2197844 is 4487912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9077 + ... + 9315.

2^2197844 is an apocalyptic number.

It is an amenable number.

2197844 is an abundant number, since it is smaller than the sum of its proper divisors (2270956).

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

2197844 is a wasteful number, since it uses less digits than its factorization.

2197844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 271 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 2197844 is about 1482.5127318172. The cubic root of 2197844 is about 130.0166448116.

It can be divided in two parts, 21978 and 44, that added together give a palindrome (22022).

The spelling of 2197844 in words is "two million, one hundred ninety-seven thousand, eight hundred forty-four".