223724 has 6 divisors (see below), whose sum is σ = 391524. Its totient is φ = 111860.

The previous prime is 223711. The next prime is 223747. The reversal of 223724 is 427322.

It is a happy number.

223724 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 223696 and 223705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27962 + ... + 27969.

It is an arithmetic number, because the mean of its divisors is an integer number (65254).

2²²³⁷²⁴ is an apocalyptic number.

It is an amenable number.

223724 is a deficient number, since it is larger than the sum of its proper divisors (167800).

223724 is a wasteful number, since it uses less digits than its factorization.

223724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55935 (or 55933 counting only the distinct ones).

The product of its digits is 672, while the sum is 20.

The square root of 223724 is about 472.9947145582. The cubic root of 223724 is about 60.7068257765.

The spelling of 223724 in words is "two hundred twenty-three thousand, seven hundred twenty-four", and thus it is an iban number.