22444136 has 64 divisors (see below), whose sum is σ = 51649920. Its totient is φ = 8997120.

The previous prime is 22444127. The next prime is 22444153. The reversal of 22444136 is 63144422.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 25886 + ... + 26738.

It is an arithmetic number, because the mean of its divisors is an integer number (807030).

Almost surely, 2^22444136 is an apocalyptic number.

22444136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22444136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25824960).

22444136 is an abundant number, since it is smaller than the sum of its proper divisors (29205784).

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

22444136 is a wasteful number, since it uses less digits than its factorization.

22444136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 902 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 22444136 is about 4737.5242479591. The cubic root of 22444136 is about 282.0769704218.

Adding to 22444136 its reverse (63144422), we get a palindrome (85588558).

The spelling of 22444136 in words is "twenty-two million, four hundred forty-four thousand, one hundred thirty-six".