44143220 has 144 divisors (see below), whose sum is σ = 114624720. Its totient is φ = 14192640.

The previous prime is 44143217. The next prime is 44143243. The reversal of 44143220 is 2234144.

It can be written as a sum of positive squares in 8 ways, for example, as 4276624 + 39866596 = 2068^2 + 6314^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44143192 and 44143201.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 1193042 + ... + 1193078.

It is an arithmetic number, because the mean of its divisors is an integer number (796005).

Almost surely, 2^44143220 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 44143220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57312360).

44143220 is an abundant number, since it is smaller than the sum of its proper divisors (70481500).

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

44143220 is a wasteful number, since it uses less digits than its factorization.

44143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44143220 is about 6644.0364237412. The cubic root of 44143220 is about 353.4174614755.

Adding to 44143220 its reverse (2234144), we get a palindrome (46377364).

The spelling of 44143220 in words is "forty-four million, one hundred forty-three thousand, two hundred twenty".