44004220 has 72 divisors (see below), whose sum is σ = 102561984. Its totient is φ = 15844608.

The previous prime is 44004217. The next prime is 44004227. The reversal of 44004220 is 2240044.

It is a junction number, because it is equal to n+sod(n) for n = 44004194 and 44004203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44004227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 158722 + ... + 158998.

It is an arithmetic number, because the mean of its divisors is an integer number (1424472).

Almost surely, 2^44004220 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 44004220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51280992).

44004220 is an abundant number, since it is smaller than the sum of its proper divisors (58557764).

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

44004220 is a wasteful number, since it uses less digits than its factorization.

44004220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 44004220 is about 6633.5676675527. The cubic root of 44004220 is about 353.0461195884.

Adding to 44004220 its reverse (2240044), we get a palindrome (46244264).

The spelling of 44004220 in words is "forty-four million, four thousand, two hundred twenty".