43224012 has 72 divisors (see below), whose sum is σ = 123883760. Its totient is φ = 12597120.

The previous prime is 43223977. The next prime is 43224017. The reversal of 43224012 is 21042234.

43224012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43224012² = 3736630426752288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (43224017) 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 23 ways as a sum of consecutive naturals, for example, 6462 + ... + 11322.

Almost surely, 2^43224012 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 43224012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61941880).

43224012 is an abundant number, since it is smaller than the sum of its proper divisors (80659748).

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

43224012 is a wasteful number, since it uses less digits than its factorization.

43224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903 (or 4898 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 43224012 is about 6574.4970910329. The cubic root of 43224012 is about 350.9471272053.

Adding to 43224012 its reverse (21042234), we get a palindrome (64266246).

The spelling of 43224012 in words is "forty-three million, two hundred twenty-four thousand, twelve".