223406 has 8 divisors (see below), whose sum is σ = 344280. Its totient is φ = 108648.

The previous prime is 223403. The next prime is 223423. The reversal of 223406 is 604322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223403) 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, 1436 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (43035).

2²²³⁴⁰⁶ is an apocalyptic number.

223406 is a deficient number, since it is larger than the sum of its proper divisors (120874).

223406 is a wasteful number, since it uses less digits than its factorization.

223406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 223406 is about 472.6584390445. The cubic root of 223406 is about 60.6780493609.

Adding to 223406 its reverse (604322), we get a palindrome (827728).

The spelling of 223406 in words is "two hundred twenty-three thousand, four hundred six".