444542320 has 80 divisors (see below), whose sum is σ = 1056816288. Its totient is φ = 173859840.

The previous prime is 444542317. The next prime is 444542341. The reversal of 444542320 is 23245444.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055710 + ... + 1056130.

Almost surely, 2^444542320 is an apocalyptic number.

444542320 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 444542320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528408144).

444542320 is an abundant number, since it is smaller than the sum of its proper divisors (612273968).

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

444542320 is a wasteful number, since it uses less digits than its factorization.

444542320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 444542320 is about 21084.1722626239. The cubic root of 444542320 is about 763.1988440284.

Adding to 444542320 its reverse (23245444), we get a palindrome (467787764).

The spelling of 444542320 in words is "four hundred forty-four million, five hundred forty-two thousand, three hundred twenty".