22406244 has 96 divisors (see below), whose sum is σ = 63974400. Its totient is φ = 5961600.

The previous prime is 22406239. The next prime is 22406261. The reversal of 22406244 is 44260422.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161127 + ... + 161265.

It is an arithmetic number, because the mean of its divisors is an integer number (666400).

Almost surely, 2^22406244 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 22406244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31987200).

22406244 is an abundant number, since it is smaller than the sum of its proper divisors (41568156).

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

22406244 is a wasteful number, since it uses less digits than its factorization.

22406244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 22406244 is about 4733.5234234130. The cubic root of 22406244 is about 281.9181393095.

Adding to 22406244 its reverse (44260422), we get a palindrome (66666666).

The spelling of 22406244 in words is "twenty-two million, four hundred six thousand, two hundred forty-four".