43693216 has 48 divisors (see below), whose sum is σ = 99126720. Its totient is φ = 18570240.

The previous prime is 43693211. The next prime is 43693267. The reversal of 43693216 is 61239634.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (43693211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28600 + ... + 30088.

It is an arithmetic number, because the mean of its divisors is an integer number (2065140).

Almost surely, 2^43693216 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 43693216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49563360).

43693216 is an abundant number, since it is smaller than the sum of its proper divisors (55433504).

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

43693216 is a wasteful number, since it uses less digits than its factorization.

43693216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1629 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 43693216 is about 6610.0844170101. The cubic root of 43693216 is about 352.2124234347.

The spelling of 43693216 in words is "forty-three million, six hundred ninety-three thousand, two hundred sixteen".