43836 has 24 divisors (see below), whose sum is σ = 110544. Its totient is φ = 13440.

The previous prime is 43801. The next prime is 43853. The reversal of 43836 is 63834.

It is a d-powerful number, because it can be written as 4⁵ + 3⁷ + 8⁵ + 3⁸ + 6⁴ .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16 + ... + 296.

It is an arithmetic number, because the mean of its divisors is an integer number (4606).

2⁴³⁸³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55272).

43836 is an abundant number, since it is smaller than the sum of its proper divisors (66708).

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

43836 is a wasteful number, since it uses less digits than its factorization.

43836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 299 counting only the distinct ones).

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

The square root of 43836 is about 209.3704850259. The cubic root of 43836 is about 35.2595668415.

It can be divided in two parts, 438 and 36, that added together give a palindrome (474).

The spelling of 43836 in words is "forty-three thousand, eight hundred thirty-six".