44221620 has 48 divisors (see below), whose sum is σ = 124225920. Its totient is φ = 11753856.

The previous prime is 44221613. The next prime is 44221633. The reversal of 44221620 is 2612244.

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 15 ways as a sum of consecutive naturals, for example, 20514 + ... + 22566.

It is an arithmetic number, because the mean of its divisors is an integer number (2588040).

Almost surely, 2^44221620 is an apocalyptic number.

It is an amenable number.

44221620 is an abundant number, since it is smaller than the sum of its proper divisors (80004300).

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

44221620 is a wasteful number, since it uses less digits than its factorization.

44221620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 44221620 is about 6649.9338342573. The cubic root of 44221620 is about 353.6265652496.

Adding to 44221620 its reverse (2612244), we get a palindrome (46833864).

The spelling of 44221620 in words is "forty-four million, two hundred twenty-one thousand, six hundred twenty".