2219440 has 20 divisors (see below), whose sum is σ = 5160384. Its totient is φ = 887744.

The previous prime is 2219423. The next prime is 2219449. The reversal of 2219440 is 449122.

2219440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2219449) 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 3 ways as a sum of consecutive naturals, for example, 13792 + ... + 13951.

2^2219440 is an apocalyptic number.

2219440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2219440 is an abundant number, since it is smaller than the sum of its proper divisors (2940944).

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

2219440 is a wasteful number, since it uses less digits than its factorization.

2219440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27756 (or 27750 counting only the distinct ones).

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

The square root of 2219440 is about 1489.7785070271. The cubic root of 2219440 is about 130.4411051364.

The spelling of 2219440 in words is "two million, two hundred nineteen thousand, four hundred forty".