43936540 has 48 divisors (see below), whose sum is σ = 96509952. Its totient is φ = 16785216.

The previous prime is 43936513. The next prime is 43936549. The reversal of 43936540 is 4563934.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 43936496 and 43936505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43936549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39877 + ... + 40963.

It is an arithmetic number, because the mean of its divisors is an integer number (2010624).

Almost surely, 2^43936540 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 43936540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48254976).

43936540 is an abundant number, since it is smaller than the sum of its proper divisors (52573412).

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

43936540 is a wasteful number, since it uses less digits than its factorization.

43936540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 43936540 is about 6628.4643772144. The cubic root of 43936540 is about 352.8650277003.

The spelling of 43936540 in words is "forty-three million, nine hundred thirty-six thousand, five hundred forty".