22244442 has 64 divisors (see below), whose sum is σ = 50761728. Its totient is φ = 6440000.

The previous prime is 22244441. The next prime is 22244477. The reversal of 22244442 is 24444222.

It is not an unprimeable number, because it can be changed into a prime (22244441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220192 + ... + 220292.

It is an arithmetic number, because the mean of its divisors is an integer number (793152).

Almost surely, 2^22244442 is an apocalyptic number.

22244442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22244442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25380864).

22244442 is an abundant number, since it is smaller than the sum of its proper divisors (28517286).

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

22244442 is a wasteful number, since it uses less digits than its factorization.

22244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its digits is 4096, while the sum is 24.

The square root of 22244442 is about 4716.4013824101. The cubic root of 22244442 is about 281.2378949852.

Adding to 22244442 its reverse (24444222), we get a palindrome (46688664).

It can be divided in two parts, 2224 and 4442, that added together give a palindrome (6666).

The spelling of 22244442 in words is "twenty-two million, two hundred forty-four thousand, four hundred forty-two".