43456 has 28 divisors (see below), whose sum is σ = 99568. Its totient is φ = 18432.

The previous prime is 43451. The next prime is 43457. The reversal of 43456 is 65434.

43456 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (28).

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

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43451) by changing a digit.

43456 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, 400 + ... + 496.

It is an arithmetic number, because the mean of its divisors is an integer number (3556).

2⁴³⁴⁵⁶ 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 43456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49784).

43456 is an abundant number, since it is smaller than the sum of its proper divisors (56112).

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

43456 is an equidigital number, since it uses as much as digits as its factorization.

43456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 106 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 43456 is about 208.4610275327. The cubic root of 43456 is about 35.1573864489.

Subtracting from 43456 its sum of digits (22), we obtain a palindrome (43434).

It can be divided in two parts, 4 and 3456, that multiplied together give a cube (13824 = 24³).

The spelling of 43456 in words is "forty-three thousand, four hundred fifty-six".