440320 has 48 divisors (see below), whose sum is σ = 1081080. Its totient is φ = 172032.

The previous prime is 440311. The next prime is 440329. The reversal of 440320 is 23044.

It is an interprime number because it is at equal distance from previous prime (440311) and next prime (440329).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 440320.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440320.

It is not an unprimeable number, because it can be changed into a prime (440329) by changing a digit.

440320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10219 + ... + 10261.

2⁴⁴⁰³²⁰ is an apocalyptic number.

440320 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 440320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540540).

440320 is an abundant number, since it is smaller than the sum of its proper divisors (640760).

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

440320 is an equidigital number, since it uses as much as digits as its factorization.

440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 440320 is about 663.5661233065. The cubic root of 440320 is about 76.0774833045.

Adding to 440320 its reverse (23044), we get a palindrome (463364).

The spelling of 440320 in words is "four hundred forty thousand, three hundred twenty", and thus it is an iban number.