22150544 has 40 divisors (see below), whose sum is σ = 46689720. Its totient is φ = 10119168.

The previous prime is 22150543. The next prime is 22150549. The reversal of 22150544 is 44505122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6310144 + 15840400 = 2512^2 + 3980^2 .

It is not an unprimeable number, because it can be changed into a prime (22150543) 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 7 ways as a sum of consecutive naturals, for example, 22184 + ... + 23160.

It is an arithmetic number, because the mean of its divisors is an integer number (1167243).

Almost surely, 2^22150544 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 22150544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23344860).

22150544 is an abundant number, since it is smaller than the sum of its proper divisors (24539176).

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

22150544 is a wasteful number, since it uses less digits than its factorization.

22150544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 22150544 is about 4706.4364438501. The cubic root of 22150544 is about 280.8416174115.

Adding to 22150544 its reverse (44505122), we get a palindrome (66655666).

The spelling of 22150544 in words is "twenty-two million, one hundred fifty thousand, five hundred forty-four".