43240224 has 48 divisors (see below), whose sum is σ = 114633792. Its totient is φ = 14270208.

The previous prime is 43240213. The next prime is 43240229. The reversal of 43240224 is 42204234.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 43240224.

It is not an unprimeable number, because it can be changed into a prime (43240229) 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 7 ways as a sum of consecutive naturals, for example, 7702 + ... + 12074.

It is an arithmetic number, because the mean of its divisors is an integer number (2388204).

Almost surely, 2^43240224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43240224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57316896).

43240224 is an abundant number, since it is smaller than the sum of its proper divisors (71393568).

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

43240224 is a wasteful number, since it uses less digits than its factorization.

43240224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489 (or 4481 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 43240224 is about 6575.7299214612. The cubic root of 43240224 is about 350.9909982188.

Adding to 43240224 its reverse (42204234), we get a palindrome (85444458).

The spelling of 43240224 in words is "forty-three million, two hundred forty thousand, two hundred twenty-four".