223856 has 20 divisors (see below), whose sum is σ = 459792. Its totient is φ = 105216.

The previous prime is 223849. The next prime is 223903. The reversal of 223856 is 658322.

223856 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×223856² = 100223017472, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 2⁵ + 8 + 3¹¹ + 5 + 6⁶ .

It is a congruent number.

It is an unprimeable number.

223856 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, 140 + ... + 683.

2²²³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

223856 is an abundant number, since it is smaller than the sum of its proper divisors (235936).

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

223856 is a wasteful number, since it uses less digits than its factorization.

223856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 842 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 223856 is about 473.1342304252. The cubic root of 223856 is about 60.7187626951.

The spelling of 223856 in words is "two hundred twenty-three thousand, eight hundred fifty-six".