43724 has 12 divisors (see below), whose sum is σ = 81144. Its totient is φ = 20544.

The previous prime is 43721. The next prime is 43753. The reversal of 43724 is 42734.

It is a happy number.

43724 is nontrivially palindromic in base 3.

43724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 43696 and 43705.

It is not an unprimeable number, because it can be changed into a prime (43721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254 + ... + 389.

It is an arithmetic number, because the mean of its divisors is an integer number (6762).

2⁴³⁷²⁴ is an apocalyptic number.

It is an amenable number.

43724 is a deficient number, since it is larger than the sum of its proper divisors (37420).

43724 is a wasteful number, since it uses less digits than its factorization.

43724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 662 counting only the distinct ones).

The product of its digits is 672, while the sum is 20.

The square root of 43724 is about 209.1028455091. The cubic root of 43724 is about 35.2295120955.

Subtracting from 43724 its reverse (42734), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 43 and 724, that added together give a palindrome (767).

The spelling of 43724 in words is "forty-three thousand, seven hundred twenty-four", and thus it is an iban number.