43616 has 24 divisors (see below), whose sum is σ = 90720. Its totient is φ = 20608.

The previous prime is 43613. The next prime is 43627. The reversal of 43616 is 61634.

43616 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

2⁴³⁶¹⁶ 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 43616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45360).

43616 is an abundant number, since it is smaller than the sum of its proper divisors (47104).

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

43616 is a wasteful number, since it uses less digits than its factorization.

43616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 78 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 43616 is about 208.8444397153. The cubic root of 43616 is about 35.2004820871.

The spelling of 43616 in words is "forty-three thousand, six hundred sixteen".