44161320 has 128 divisors (see below), whose sum is σ = 159436800. Its totient is φ = 9559296.

The previous prime is 44161319. The next prime is 44161331. The reversal of 44161320 is 2316144.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14577 + ... + 17343.

It is an arithmetic number, because the mean of its divisors is an integer number (1245600).

Almost surely, 2^44161320 is an apocalyptic number.

44161320 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 44161320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79718400).

44161320 is an abundant number, since it is smaller than the sum of its proper divisors (115275480).

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

44161320 is a wasteful number, since it uses less digits than its factorization.

44161320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 44161320 is about 6645.3984079211. The cubic root of 44161320 is about 353.4657586768.

Adding to 44161320 its reverse (2316144), we get a palindrome (46477464).

The spelling of 44161320 in words is "forty-four million, one hundred sixty-one thousand, three hundred twenty".