22446 has 24 divisors (see below), whose sum is σ = 51480. Its totient is φ = 7056.

The previous prime is 22441. The next prime is 22447. The reversal of 22446 is 64422.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (2145).

2²²⁴⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25740).

22446 is an abundant number, since it is smaller than the sum of its proper divisors (29034).

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

22446 is a wasteful number, since it uses less digits than its factorization.

22446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 77 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22446 is about 149.8198918702. The cubic root of 22446 is about 28.2084779097.

Adding to 22446 its reverse (64422), we get a palindrome (86868).

The spelling of 22446 in words is "twenty-two thousand, four hundred forty-six".