44221020 has 24 divisors (see below), whose sum is σ = 123819024. Its totient is φ = 11792256.

The previous prime is 44221013. The next prime is 44221069. The reversal of 44221020 is 2012244.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 368449 + ... + 368568.

It is an arithmetic number, because the mean of its divisors is an integer number (5159126).

Almost surely, 2^44221020 is an apocalyptic number.

It is an amenable number.

44221020 is an abundant number, since it is smaller than the sum of its proper divisors (79598004).

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

44221020 is a wasteful number, since it uses less digits than its factorization.

44221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737029 (or 737027 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 44221020 is about 6649.8887208735. Note that the first 3 decimals coincide. The cubic root of 44221020 is about 353.6249659044.

Adding to 44221020 its reverse (2012244), we get a palindrome (46233264).

The spelling of 44221020 in words is "forty-four million, two hundred twenty-one thousand, twenty".