2224240 has 20 divisors (see below), whose sum is σ = 5171544. Its totient is φ = 889664.

The previous prime is 2224231. The next prime is 2224247. The reversal of 2224240 is 424222.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224247) 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, 13822 + ... + 13981.

2^2224240 is an apocalyptic number.

2224240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2224240 is an abundant number, since it is smaller than the sum of its proper divisors (2947304).

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

2224240 is a wasteful number, since it uses less digits than its factorization.

2224240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27816 (or 27810 counting only the distinct ones).

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

The square root of 2224240 is about 1491.3886146810. The cubic root of 2224240 is about 130.5350727553.

Adding to 2224240 its reverse (424222), we get a palindrome (2648462).

The spelling of 2224240 in words is "two million, two hundred twenty-four thousand, two hundred forty".