43443420 has 48 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 11557696.

The previous prime is 43443401. The next prime is 43443427. The reversal of 43443420 is 2434434.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43443427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49909 + ... + 50771.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^43443420 is an apocalyptic number.

It is an amenable number.

43443420 is an abundant number, since it is smaller than the sum of its proper divisors (78484260).

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

43443420 is a wasteful number, since it uses less digits than its factorization.

43443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 43443420 is about 6591.1622647299. The cubic root of 43443420 is about 351.5399357172.

Adding to 43443420 its reverse (2434434), we get a palindrome (45877854).

The spelling of 43443420 in words is "forty-three million, four hundred forty-three thousand, four hundred twenty".