2194240 has 28 divisors (see below), whose sum is σ = 5225796. Its totient is φ = 877568.

The previous prime is 2194229. The next prime is 2194243. The reversal of 2194240 is 424912.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 1915456 = 528^2 + 1384^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194243) 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, 3109 + ... + 3748.

2^2194240 is an apocalyptic number.

2194240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2194240 is an abundant number, since it is smaller than the sum of its proper divisors (3031556).

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

2194240 is an equidigital number, since it uses as much as digits as its factorization.

2194240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874 (or 6864 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2194240 is about 1481.2967292207. The cubic root of 2194240 is about 129.9455393182.

The spelling of 2194240 in words is "two million, one hundred ninety-four thousand, two hundred forty".