44421220 has 12 divisors (see below), whose sum is σ = 93284604. Its totient is φ = 17768480.

The previous prime is 44421161. The next prime is 44421253. The reversal of 44421220 is 2212444.

It can be written as a sum of positive squares in 2 ways, for example, as 34786404 + 9634816 = 5898^2 + 3104^2 .

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 3 ways as a sum of consecutive naturals, for example, 1110511 + ... + 1110550.

It is an arithmetic number, because the mean of its divisors is an integer number (7773717).

Almost surely, 2^44421220 is an apocalyptic number.

It is an amenable number.

44421220 is an abundant number, since it is smaller than the sum of its proper divisors (48863384).

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

44421220 is a wasteful number, since it uses less digits than its factorization.

44421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221070 (or 2221068 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 44421220 is about 6664.9246057251. The cubic root of 44421220 is about 354.1578131735.

Adding to 44421220 its reverse (2212444), we get a palindrome (46633664).

The spelling of 44421220 in words is "forty-four million, four hundred twenty-one thousand, two hundred twenty".