43115240 has 64 divisors (see below), whose sum is σ = 113477760. Its totient is φ = 14434560.

The previous prime is 43115221. The next prime is 43115273. The reversal of 43115240 is 4251134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10250 + ... + 13830.

It is an arithmetic number, because the mean of its divisors is an integer number (1773090).

Almost surely, 2^43115240 is an apocalyptic number.

43115240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43115240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56738880).

43115240 is an abundant number, since it is smaller than the sum of its proper divisors (70362520).

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

43115240 is a wasteful number, since it uses less digits than its factorization.

43115240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 43115240 is about 6566.2196125320. The cubic root of 43115240 is about 350.6524970942.

Adding to 43115240 its reverse (4251134), we get a palindrome (47366374).

The spelling of 43115240 in words is "forty-three million, one hundred fifteen thousand, two hundred forty".