43397228 has 48 divisors (see below), whose sum is σ = 91822080. Its totient is φ = 17544384.

The previous prime is 43397203. The next prime is 43397257. The reversal of 43397228 is 82279334.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 43397191 and 43397200.

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 15 ways as a sum of consecutive naturals, for example, 50450 + ... + 51302.

It is an arithmetic number, because the mean of its divisors is an integer number (1912960).

Almost surely, 2^43397228 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 43397228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45911040).

43397228 is an abundant number, since it is smaller than the sum of its proper divisors (48424852).

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

43397228 is a wasteful number, since it uses less digits than its factorization.

43397228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 964 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 43397228 is about 6587.6572467001. The cubic root of 43397228 is about 351.4152978062.

The spelling of 43397228 in words is "forty-three million, three hundred ninety-seven thousand, two hundred twenty-eight".