43404020 has 48 divisors (see below), whose sum is σ = 100675008. Its totient is φ = 15586560.

The previous prime is 43404019. The next prime is 43404029. The reversal of 43404020 is 2040434.

43404020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 43404020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43404029) 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 15 ways as a sum of consecutive naturals, for example, 17072 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (2097396).

Almost surely, 2^43404020 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 43404020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50337504).

43404020 is an abundant number, since it is smaller than the sum of its proper divisors (57270988).

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

43404020 is a wasteful number, since it uses less digits than its factorization.

43404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 43404020 is about 6588.1727360475. The cubic root of 43404020 is about 351.4336299156.

Adding to 43404020 its reverse (2040434), we get a palindrome (45444454).

The spelling of 43404020 in words is "forty-three million, four hundred four thousand, twenty".