22394 has 4 divisors (see below), whose sum is σ = 33594. Its totient is φ = 11196.

The previous prime is 22391. The next prime is 22397. The reversal of 22394 is 49322.

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

It is an interprime number because it is at equal distance from previous prime (22391) and next prime (22397).

It can be written as a sum of positive squares in only one way, i.e., 21025 + 1369 = 145^2 + 37^2 .

It is a Curzon number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5597 + ... + 5600.

2²²³⁹⁴ is an apocalyptic number.

22394 is a deficient number, since it is larger than the sum of its proper divisors (11200).

22394 is a wasteful number, since it uses less digits than its factorization.

22394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199.

The product of its digits is 432, while the sum is 20.

The square root of 22394 is about 149.6462495354. The cubic root of 22394 is about 28.1866778111.

It can be divided in two parts, 22 and 394, that multiplied together give a palindrome (8668).

The spelling of 22394 in words is "twenty-two thousand, three hundred ninety-four".