22220044 has 48 divisors (see below), whose sum is σ = 51045120. Its totient is φ = 8199360.

The previous prime is 22220041. The next prime is 22220057. The reversal of 22220044 is 44002222.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22220041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3954 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (1063440).

Almost surely, 2^22220044 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 22220044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25522560).

22220044 is an abundant number, since it is smaller than the sum of its proper divisors (28825076).

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

22220044 is a wasteful number, since it uses less digits than its factorization.

22220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838 (or 3836 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22220044 is about 4713.8141668929. The cubic root of 22220044 is about 281.1350355482.

Adding to 22220044 its reverse (44002222), we get a palindrome (66222266).

The spelling of 22220044 in words is "twenty-two million, two hundred twenty thousand, forty-four".