223536 has 20 divisors (see below), whose sum is σ = 577592. Its totient is φ = 74496.

The previous prime is 223529. The next prime is 223543. The reversal of 223536 is 635322.

It is an interprime number because it is at equal distance from previous prime (223529) and next prime (223543).

It is a nialpdrome in base 12.

It is an unprimeable number.

223536 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281 + ... + 2376.

2²²³⁵³⁶ is an apocalyptic number.

It is an amenable number.

223536 is an abundant number, since it is smaller than the sum of its proper divisors (354056).

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

223536 is a wasteful number, since it uses less digits than its factorization.

223536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4662 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 223536 is about 472.7959390689. The cubic root of 223536 is about 60.6898166021.

Adding to 223536 its reverse (635322), we get a palindrome (858858).

The spelling of 223536 in words is "two hundred twenty-three thousand, five hundred thirty-six".