43297740 has 144 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 11275200.

The previous prime is 43297711. The next prime is 43297741. The reversal of 43297740 is 4779234.

43297740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 43297695 and 43297704.

It is not an unprimeable number, because it can be changed into a prime (43297741) 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 47 ways as a sum of consecutive naturals, for example, 286665 + ... + 286815.

It is an arithmetic number, because the mean of its divisors is an integer number (968240).

Almost surely, 2^43297740 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 43297740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69713280).

43297740 is an abundant number, since it is smaller than the sum of its proper divisors (96128820).

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

43297740 is a wasteful number, since it uses less digits than its factorization.

43297740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 43297740 is about 6580.1018229204. The cubic root of 43297740 is about 351.1465528710.

The spelling of 43297740 in words is "forty-three million, two hundred ninety-seven thousand, seven hundred forty".