43223136 has 108 divisors (see below), whose sum is σ = 126791028. Its totient is φ = 12883200.

The previous prime is 43223113. The next prime is 43223149. The reversal of 43223136 is 63132234.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 708546 + ... + 708606.

It is an arithmetic number, because the mean of its divisors is an integer number (1173991).

Almost surely, 2^43223136 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 43223136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63395514).

43223136 is an abundant number, since it is smaller than the sum of its proper divisors (83567892).

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

43223136 is a wasteful number, since it uses less digits than its factorization.

43223136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 77 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 43223136 is about 6574.4304696301. The cubic root of 43223136 is about 350.9447563644.

Multiplying 43223136 by its sum of digits (24), we get a square (1037355264 = 32208²).

43223136 divided by its sum of digits (24) gives a square (1800964 = 1342²).

The spelling of 43223136 in words is "forty-three million, two hundred twenty-three thousand, one hundred thirty-six".