43730118 has 20 divisors (see below), whose sum is σ = 97988220. Its totient is φ = 14576652.

The previous prime is 43730117. The next prime is 43730123. The reversal of 43730118 is 81103734.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 43730091 and 43730100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43730111) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 134808 + ... + 135131.

It is an arithmetic number, because the mean of its divisors is an integer number (4899411).

Almost surely, 2^43730118 is an apocalyptic number.

43730118 is an abundant number, since it is smaller than the sum of its proper divisors (54258102).

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

43730118 is a wasteful number, since it uses less digits than its factorization.

43730118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269953 (or 269944 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 43730118 is about 6612.8751689413. The cubic root of 43730118 is about 352.3115516038.

The spelling of 43730118 in words is "forty-three million, seven hundred thirty thousand, one hundred eighteen".