43223720 has 32 divisors (see below), whose sum is σ = 98172000. Its totient is φ = 17126208.

The previous prime is 43223711. The next prime is 43223731. The reversal of 43223720 is 2732234.

It is an unprimeable number.

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, 770 + ... + 9329.

It is an arithmetic number, because the mean of its divisors is an integer number (3067875).

Almost surely, 2^43223720 is an apocalyptic number.

43223720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43223720 is an abundant number, since it is smaller than the sum of its proper divisors (54948280).

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

43223720 is a wasteful number, since it uses less digits than its factorization.

43223720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217 (or 10213 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 43223720 is about 6574.4748839736. The cubic root of 43223720 is about 350.9463369286.

Adding to 43223720 its reverse (2732234), we get a palindrome (45955954).

The spelling of 43223720 in words is "forty-three million, two hundred twenty-three thousand, seven hundred twenty".