43687140 has 192 divisors, whose sum is σ = 149022720. Its totient is φ = 9354240.

The previous prime is 43687123. The next prime is 43687177. The reversal of 43687140 is 4178634.

43687140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 740431 + ... + 740489.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^43687140 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 43687140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74511360).

43687140 is an abundant number, since it is smaller than the sum of its proper divisors (105335580).

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

43687140 is a wasteful number, since it uses less digits than its factorization.

43687140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 43687140 is about 6609.6248002440. The cubic root of 43687140 is about 352.1960964006.

The spelling of 43687140 in words is "forty-three million, six hundred eighty-seven thousand, one hundred forty".