223956 has 18 divisors (see below), whose sum is σ = 566202. Its totient is φ = 74640.

The previous prime is 223939. The next prime is 223963. The reversal of 223956 is 659322.

It can be written as a sum of positive squares in only one way, i.e., 133956 + 90000 = 366^2 + 300^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3075 + ... + 3146.

2²²³⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

223956 is an abundant number, since it is smaller than the sum of its proper divisors (342246).

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

223956 is a wasteful number, since it uses less digits than its factorization.

223956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231 (or 6226 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 223956 is about 473.2398968811. The cubic root of 223956 is about 60.7278026916.

The spelling of 223956 in words is "two hundred twenty-three thousand, nine hundred fifty-six".