44220 has 48 divisors (see below), whose sum is σ = 137088. Its totient is φ = 10560.

The previous prime is 44207. The next prime is 44221. The reversal of 44220 is 2244.

44220 = T₂₁ + T₂₂ + ... + T₆₄.

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

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 44196 and 44205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (2856).

2⁴⁴²²⁰ 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 44220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68544).

44220 is an abundant number, since it is smaller than the sum of its proper divisors (92868).

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

44220 is a wasteful number, since it uses less digits than its factorization.

44220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 44220 is about 210.2855201862. The cubic root of 44220 is about 35.3622246984.

Adding to 44220 its reverse (2244), we get a palindrome (46464).

It can be divided in two parts, 4 and 4220, that added together give a palindrome (4224).

The spelling of 44220 in words is "forty-four thousand, two hundred twenty", and thus it is an iban number.