43424 has 24 divisors (see below), whose sum is σ = 90720. Its totient is φ = 20416.

The previous prime is 43411. The next prime is 43427. The reversal of 43424 is 42434.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (43427) by changing a digit.

43424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

2⁴³⁴²⁴ 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 43424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45360).

43424 is an abundant number, since it is smaller than the sum of its proper divisors (47296).

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

43424 is a wasteful number, since it uses less digits than its factorization.

43424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 84 counting only the distinct ones).

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

The square root of 43424 is about 208.3842604421. The cubic root of 43424 is about 35.1487546325.

Adding to 43424 its reverse (42434), we get a palindrome (85858).

Subtracting from 43424 its reverse (42434), we obtain a triangular number (990 = T₄₄).

The spelling of 43424 in words is "forty-three thousand, four hundred twenty-four", and thus it is an iban number.