2240440 has 32 divisors (see below), whose sum is σ = 5112000. Its totient is φ = 883584.

The previous prime is 2240431. The next prime is 2240449. The reversal of 2240440 is 440422.

2240440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2240431) and next prime (2240449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2806 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (159750).

2^2240440 is an apocalyptic number.

2240440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2556000).

2240440 is an abundant number, since it is smaller than the sum of its proper divisors (2871560).

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

2240440 is a wasteful number, since it uses less digits than its factorization.

2240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2240440 is about 1496.8099411749. The cubic root of 2240440 is about 130.8512189251.

Adding to 2240440 its reverse (440422), we get a palindrome (2680862).

The spelling of 2240440 in words is "two million, two hundred forty thousand, four hundred forty".