43668436 has 48 divisors (see below), whose sum is σ = 91299712. Its totient is φ = 17884800.

The previous prime is 43668433. The next prime is 43668503. The reversal of 43668436 is 63486634.

43668436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43668431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62851 + ... + 63541.

Almost surely, 2^43668436 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 43668436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45649856).

43668436 is an abundant number, since it is smaller than the sum of its proper divisors (47631276).

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

43668436 is a wasteful number, since it uses less digits than its factorization.

43668436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 43668436 is about 6608.2097424340. The cubic root of 43668436 is about 352.1458267169.

The spelling of 43668436 in words is "forty-three million, six hundred sixty-eight thousand, four hundred thirty-six".