22456 has 16 divisors (see below), whose sum is σ = 48240. Its totient is φ = 9600.

The previous prime is 22453. The next prime is 22469. The reversal of 22456 is 65422.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145 + ... + 256.

It is an arithmetic number, because the mean of its divisors is an integer number (3015).

2²²⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

22456 is an abundant number, since it is smaller than the sum of its proper divisors (25784).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24120).

22456 is a wasteful number, since it uses less digits than its factorization.

22456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 410 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 22456 is about 149.8532615594. The cubic root of 22456 is about 28.2126663753.

Adding to 22456 its reverse (65422), we get a palindrome (87878).

It can be divided in two parts, 224 and 56, that multiplied together give a square (12544 = 112²).

The spelling of 22456 in words is "twenty-two thousand, four hundred fifty-six".