44444220 has 24 divisors (see below), whose sum is σ = 124443984. Its totient is φ = 11851776.

The previous prime is 44444209. The next prime is 44444221. The reversal of 44444220 is 2244444.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444221) 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, 370309 + ... + 370428.

It is an arithmetic number, because the mean of its divisors is an integer number (5185166).

Almost surely, 2^44444220 is an apocalyptic number.

It is an amenable number.

44444220 is an abundant number, since it is smaller than the sum of its proper divisors (79999764).

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

44444220 is a wasteful number, since it uses less digits than its factorization.

44444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740749 (or 740747 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 44444220 is about 6666.6498333121. The cubic root of 44444220 is about 354.2189267903.

Adding to 44444220 its reverse (2244444), we get a palindrome (46688664).

The spelling of 44444220 in words is "forty-four million, four hundred forty-four thousand, two hundred twenty".