43340340 has 48 divisors (see below), whose sum is σ = 122548608. Its totient is φ = 11443584.

The previous prime is 43340329. The next prime is 43340347. The reversal of 43340340 is 4304334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43340347) by changing a digit.

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, 2674 + ... + 9686.

It is an arithmetic number, because the mean of its divisors is an integer number (2553096).

Almost surely, 2^43340340 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 43340340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61274304).

43340340 is an abundant number, since it is smaller than the sum of its proper divisors (79208268).

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

43340340 is a wasteful number, since it uses less digits than its factorization.

43340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128 (or 7126 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 43340340 is about 6583.3380590700. The cubic root of 43340340 is about 351.2616777398.

Adding to 43340340 its reverse (4304334), we get a palindrome (47644674).

The spelling of 43340340 in words is "forty-three million, three hundred forty thousand, three hundred forty".