43240220 has 24 divisors (see below), whose sum is σ = 91191408. Its totient is φ = 17222400.

The previous prime is 43240213. The next prime is 43240229. The reversal of 43240220 is 2204234.

43240220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (3799642).

Almost surely, 2^43240220 is an apocalyptic number.

It is an amenable number.

43240220 is an abundant number, since it is smaller than the sum of its proper divisors (47951188).

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

43240220 is a wasteful number, since it uses less digits than its factorization.

43240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221 (or 9219 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 43240220 is about 6575.7296173124. The cubic root of 43240220 is about 350.9909873959.

Adding to 43240220 its reverse (2204234), we get a palindrome (45444454).

The spelling of 43240220 in words is "forty-three million, two hundred forty thousand, two hundred twenty".