44220012 has 48 divisors (see below), whose sum is σ = 110208000. Its totient is φ = 13769280.

The previous prime is 44219971. The next prime is 44220023. The reversal of 44220012 is 21002244.

It is a super-2 number, since 2×44220012² = 3910818922560288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44219973 and 44220000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8739 + ... + 12837.

It is an arithmetic number, because the mean of its divisors is an integer number (2296000).

Almost surely, 2^44220012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44220012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55104000).

44220012 is an abundant number, since it is smaller than the sum of its proper divisors (65987988).

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

44220012 is a wasteful number, since it uses less digits than its factorization.

44220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166 (or 4164 counting only the distinct ones).

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

The square root of 44220012 is about 6649.8129296996. The cubic root of 44220012 is about 353.6222789720.

Adding to 44220012 its reverse (21002244), we get a palindrome (65222256).

The spelling of 44220012 in words is "forty-four million, two hundred twenty thousand, twelve".