22244000 has 96 divisors (see below), whose sum is σ = 56137536. Its totient is φ = 8659200.

The previous prime is 22243987. The next prime is 22244009. The reversal of 22244000 is 44222.

It is a happy number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22244009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267959 + ... + 268041.

It is an arithmetic number, because the mean of its divisors is an integer number (584766).

Almost surely, 2^22244000 is an apocalyptic number.

22244000 is a gapful number since it is divisible by the number (20) 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 22244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28068768).

22244000 is an abundant number, since it is smaller than the sum of its proper divisors (33893536).

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

22244000 is an equidigital number, since it uses as much as digits as its factorization.

22244000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22244000 is about 4716.3545244182. The cubic root of 22244000 is about 281.2360322281.

Adding to 22244000 its reverse (44222), we get a palindrome (22288222).

The spelling of 22244000 in words is "twenty-two million, two hundred forty-four thousand".