43116640 has 96 divisors (see below), whose sum is σ = 117681984. Its totient is φ = 14622720.

The previous prime is 43116637. The next prime is 43116677. The reversal of 43116640 is 4661134.

It is a congruent number.

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, 153300 + ... + 153580.

It is an arithmetic number, because the mean of its divisors is an integer number (1225854).

Almost surely, 2^43116640 is an apocalyptic number.

43116640 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 43116640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58840992).

43116640 is an abundant number, since it is smaller than the sum of its proper divisors (74565344).

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

43116640 is a wasteful number, since it uses less digits than its factorization.

43116640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 43116640 is about 6566.3262179091. The cubic root of 43116640 is about 350.6562924125.

Adding to 43116640 its reverse (4661134), we get a palindrome (47777774).

It can be divided in two parts, 431 and 16640, that added together give a palindrome (17071).

The spelling of 43116640 in words is "forty-three million, one hundred sixteen thousand, six hundred forty".