223998 has 16 divisors (see below), whose sum is σ = 460560. Its totient is φ = 72576.

The previous prime is 223969. The next prime is 223999. The reversal of 223998 is 899322.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223999) by changing a digit.

223998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (28785).

2²²³⁹⁹⁸ is an apocalyptic number.

223998 is an abundant number, since it is smaller than the sum of its proper divisors (236562).

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

223998 is a wasteful number, since it uses less digits than its factorization.

223998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its digits is 7776, while the sum is 33.

The square root of 223998 is about 473.2842697576. The cubic root of 223998 is about 60.7315986876.

It can be divided in two parts, 223 and 998, that added together give a palindrome (1221).

The spelling of 223998 in words is "two hundred twenty-three thousand, nine hundred ninety-eight".