43220 has 12 divisors (see below), whose sum is σ = 90804. Its totient is φ = 17280.

The previous prime is 43207. The next prime is 43223. The reversal of 43220 is 2234.

43220 = T₁₄₅ + T₁₄₆ + ... + T₁₄₈.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 21904 = 146^2 + 148^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43223) 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 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (7567).

2⁴³²²⁰ is an apocalyptic number.

It is an amenable number.

43220 is an abundant number, since it is smaller than the sum of its proper divisors (47584).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45402).

43220 is a wasteful number, since it uses less digits than its factorization.

43220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 43220 is about 207.8942038634. The cubic root of 43220 is about 35.0936268708.

Adding to 43220 its reverse (2234), we get a palindrome (45454).

It can be divided in two parts, 4 and 3220, that multiplied together give a triangular number (12880 = T₁₆₀).

The spelling of 43220 in words is "forty-three thousand, two hundred twenty", and thus it is an iban number.