43320 has 48 divisors (see below), whose sum is σ = 137160. Its totient is φ = 10944.

The previous prime is 43319. The next prime is 43321. The reversal of 43320 is 2334.

It is an interprime number because it is at equal distance from previous prime (43319) and next prime (43321).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 10 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 43296 and 43305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43321) 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 11 ways as a sum of consecutive naturals, for example, 2271 + ... + 2289.

2⁴³³²⁰ is an apocalyptic number.

43320 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 43320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68580).

43320 is an abundant number, since it is smaller than the sum of its proper divisors (93840).

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

43320 is a wasteful number, since it uses less digits than its factorization.

43320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 43320 is about 208.1345718520. The cubic root of 43320 is about 35.1206719084.

Adding to 43320 its reverse (2334), we get a palindrome (45654).

It can be divided in two parts, 43 and 320, that added together give a palindrome (363).

The spelling of 43320 in words is "forty-three thousand, three hundred twenty", and thus it is an iban number.