44440220 has 24 divisors (see below), whose sum is σ = 101809008. Its totient is φ = 16160000.

The previous prime is 44440213. The next prime is 44440223. The reversal of 44440220 is 2204444.

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 = 44440192 and 44440201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44440223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100781 + ... + 101220.

It is an arithmetic number, because the mean of its divisors is an integer number (4242042).

Almost surely, 2^44440220 is an apocalyptic number.

It is an amenable number.

44440220 is an abundant number, since it is smaller than the sum of its proper divisors (57368788).

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

44440220 is a wasteful number, since it uses less digits than its factorization.

44440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202021 (or 202019 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 44440220 is about 6666.3498258042. The cubic root of 44440220 is about 354.2082998501.

Adding to 44440220 its reverse (2204444), we get a palindrome (46644664).

The spelling of 44440220 in words is "forty-four million, four hundred forty thousand, two hundred twenty".