22445532 has 96 divisors (see below), whose sum is σ = 61669440. Its totient is φ = 7050240.

The previous prime is 22445531. The next prime is 22445537. The reversal of 22445532 is 23554422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22445496 and 22445505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163768 + ... + 163904.

It is an arithmetic number, because the mean of its divisors is an integer number (642390).

Almost surely, 2^22445532 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 22445532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30834720).

22445532 is an abundant number, since it is smaller than the sum of its proper divisors (39223908).

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

22445532 is a wasteful number, since it uses less digits than its factorization.

22445532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 220 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 22445532 is about 4737.6715800064. The cubic root of 22445532 is about 282.0828185906.

Adding to 22445532 its reverse (23554422), we get a palindrome (45999954).

It can be divided in two parts, 2244 and 5532, that added together give a 5-th power (7776 = 6⁵).

The spelling of 22445532 in words is "twenty-two million, four hundred forty-five thousand, five hundred thirty-two".