223836 has 24 divisors (see below), whose sum is σ = 545664. Its totient is φ = 71280.

The previous prime is 223831. The next prime is 223837. The reversal of 223836 is 638322.

It is a d-powerful number, because it can be written as 2³ + 2³ + 8 + 3² + 3¹¹ + 6⁶ .

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 (223831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (22736).

2²²³⁸³⁶ is an apocalyptic number.

It is an amenable number.

223836 is an abundant number, since it is smaller than the sum of its proper divisors (321828).

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

223836 is a wasteful number, since it uses less digits than its factorization.

223836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 839 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 223836 is about 473.1130943020. The cubic root of 223836 is about 60.7169543727.

The spelling of 223836 in words is "two hundred twenty-three thousand, eight hundred thirty-six".