22306144 has 24 divisors (see below), whose sum is σ = 50189328. Its totient is φ = 9559680.

The previous prime is 22306139. The next prime is 22306147. The reversal of 22306144 is 44160322.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22306147) 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 3 ways as a sum of consecutive naturals, for example, 49567 + ... + 50014.

It is an arithmetic number, because the mean of its divisors is an integer number (2091222).

Almost surely, 2^22306144 is an apocalyptic number.

It is an amenable number.

22306144 is an abundant number, since it is smaller than the sum of its proper divisors (27883184).

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

22306144 is an equidigital number, since it uses as much as digits as its factorization.

22306144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99598 (or 99590 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22306144 is about 4722.9380686179. The cubic root of 22306144 is about 281.4976890295.

Adding to 22306144 its reverse (44160322), we get a palindrome (66466466).

The spelling of 22306144 in words is "twenty-two million, three hundred six thousand, one hundred forty-four".