43608940 has 48 divisors (see below), whose sum is σ = 97138944. Its totient is φ = 16416000.

The previous prime is 43608937. The next prime is 43608949. The reversal of 43608940 is 4980634.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 43608896 and 43608905.

It is not an unprimeable number, because it can be changed into a prime (43608949) 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, 21990 + ... + 23890.

It is an arithmetic number, because the mean of its divisors is an integer number (2023728).

Almost surely, 2^43608940 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 43608940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48569472).

43608940 is an abundant number, since it is smaller than the sum of its proper divisors (53530004).

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

43608940 is a wasteful number, since it uses less digits than its factorization.

43608940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 43608940 is about 6603.7065349696. The cubic root of 43608940 is about 351.9858271670.

The spelling of 43608940 in words is "forty-three million, six hundred eight thousand, nine hundred forty".