22426 has 4 divisors (see below), whose sum is σ = 33642. Its totient is φ = 11212.

The previous prime is 22409. The next prime is 22433. The reversal of 22426 is 62422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22201 + 225 = 149^2 + 15^2 .

It is a plaindrome in base 7, base 9 and base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605 + ... + 5608.

2²²⁴²⁶ is an apocalyptic number.

22426 is a deficient number, since it is larger than the sum of its proper divisors (11216).

22426 is a wasteful number, since it uses less digits than its factorization.

22426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11215.

The product of its digits is 192, while the sum is 16.

The square root of 22426 is about 149.7531301843. The cubic root of 22426 is about 28.2000972449.

Adding to 22426 its reverse (62422), we get a palindrome (84848).

The spelling of 22426 in words is "twenty-two thousand, four hundred twenty-six".