4424240 has 40 divisors (see below), whose sum is σ = 10646640. Its totient is φ = 1707776.

The previous prime is 4424239. The next prime is 4424249. The reversal of 4424240 is 424244.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4424249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (266166).

Almost surely, 2^4424240 is an apocalyptic number.

4424240 is a gapful number since it is divisible by the number (40) 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 4424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5323320).

4424240 is an abundant number, since it is smaller than the sum of its proper divisors (6222400).

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

4424240 is a wasteful number, since it uses less digits than its factorization.

4424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4424240 is about 2103.3877436174. The cubic root of 4424240 is about 164.1646175746.

Adding to 4424240 its reverse (424244), we get a palindrome (4848484).

It can be divided in two parts, 4424 and 240, that added together give a palindrome (4664).

The spelling of 4424240 in words is "four million, four hundred twenty-four thousand, two hundred forty".