43257340 has 48 divisors (see below), whose sum is σ = 104315904. Its totient is φ = 14760000.

The previous prime is 43257323. The next prime is 43257341. The reversal of 43257340 is 4375234.

43257340 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 (28).

It is a junction number, because it is equal to n+sod(n) for n = 43257299 and 43257308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43257341) 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, 34525 + ... + 35755.

It is an arithmetic number, because the mean of its divisors is an integer number (2173248).

Almost surely, 2^43257340 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 43257340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52157952).

43257340 is an abundant number, since it is smaller than the sum of its proper divisors (61058564).

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

43257340 is a wasteful number, since it uses less digits than its factorization.

43257340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 43257340 is about 6577.0312451744. The cubic root of 43257340 is about 351.0373036329.

The spelling of 43257340 in words is "forty-three million, two hundred fifty-seven thousand, three hundred forty".