4224240 has 60 divisors (see below), whose sum is σ = 14188824. Its totient is φ = 1126272.

The previous prime is 4224229. The next prime is 4224247. The reversal of 4224240 is 424224.

4224240 is a `hidden beast` number, since 422 + 4 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2214 + ... + 3653.

Almost surely, 2^4224240 is an apocalyptic number.

4224240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4224240 is an abundant number, since it is smaller than the sum of its proper divisors (9964584).

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

4224240 is a wasteful number, since it uses less digits than its factorization.

4224240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4224240 is about 2055.2955991779. The cubic root of 4224240 is about 161.6526623124.

Adding to 4224240 its reverse (424224), we get a palindrome (4648464).

The spelling of 4224240 in words is "four million, two hundred twenty-four thousand, two hundred forty".