440220 has 96 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 98560.

The previous prime is 440207. The next prime is 440221. The reversal of 440220 is 22044.

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

It is a junction number, because it is equal to n+sod(n) for n = 440196 and 440205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15166 + ... + 15194.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁴⁴⁰²²⁰ 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 440220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

440220 is an abundant number, since it is smaller than the sum of its proper divisors (1011300).

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

440220 is a wasteful number, since it uses less digits than its factorization.

440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 73 counting only the distinct ones).

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

The square root of 440220 is about 663.4907685869. The cubic root of 440220 is about 76.0717236113.

Adding to 440220 its reverse (22044), we get a palindrome (462264).

The spelling of 440220 in words is "four hundred forty thousand, two hundred twenty", and thus it is an iban number.