43868140 has 24 divisors (see below), whose sum is σ = 92972880. Its totient is φ = 17385408.

The previous prime is 43868081. The next prime is 43868141. The reversal of 43868140 is 4186834.

It is a junction number, because it is equal to n+sod(n) for n = 43868096 and 43868105.

It is not an unprimeable number, because it can be changed into a prime (43868141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7882 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (3873870).

Almost surely, 2^43868140 is an apocalyptic number.

It is an amenable number.

43868140 is an abundant number, since it is smaller than the sum of its proper divisors (49104740).

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

43868140 is a wasteful number, since it uses less digits than its factorization.

43868140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20241 (or 20239 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 43868140 is about 6623.3028014730. The cubic root of 43868140 is about 352.6818202559.

The spelling of 43868140 in words is "forty-three million, eight hundred sixty-eight thousand, one hundred forty".