2272240 has 20 divisors (see below), whose sum is σ = 5283144. Its totient is φ = 908864.

The previous prime is 2272223. The next prime is 2272241. The reversal of 2272240 is 422722.

2272240 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272241) 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, 14122 + ... + 14281.

2^2272240 is an apocalyptic number.

2272240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2272240 is an abundant number, since it is smaller than the sum of its proper divisors (3010904).

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

2272240 is a wasteful number, since it uses less digits than its factorization.

2272240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28416 (or 28410 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 2272240 is about 1507.3951041449. The cubic root of 2272240 is about 131.4673978366.

Adding to 2272240 its reverse (422722), we get a palindrome (2694962).

The spelling of 2272240 in words is "two million, two hundred seventy-two thousand, two hundred forty".