223828 has 12 divisors (see below), whose sum is σ = 427392. Its totient is φ = 101720.

The previous prime is 223823. The next prime is 223829. The reversal of 223828 is 828322.

223828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (223823) by changing a digit.

223828 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, 2500 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (35616).

2²²³⁸²⁸ is an apocalyptic number.

It is an amenable number.

223828 is a deficient number, since it is larger than the sum of its proper divisors (203564).

223828 is a wasteful number, since it uses less digits than its factorization.

223828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102 (or 5100 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 223828 is about 473.1046395883. The cubic root of 223828 is about 60.7162310136.

The spelling of 223828 in words is "two hundred twenty-three thousand, eight hundred twenty-eight".