43008040 has 16 divisors (see below), whose sum is σ = 96768180. Its totient is φ = 17203200.

The previous prime is 43007983. The next prime is 43008047. The reversal of 43008040 is 4080034.

It can be written as a sum of positive squares in 2 ways, for example, as 43007364 + 676 = 6558^2 + 26^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43007999 and 43008017.

It is not an unprimeable number, because it can be changed into a prime (43008047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537561 + ... + 537640.

Almost surely, 2^43008040 is an apocalyptic number.

43008040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43008040 is an abundant number, since it is smaller than the sum of its proper divisors (53760140).

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

43008040 is a wasteful number, since it uses less digits than its factorization.

43008040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075212 (or 1075208 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 43008040 is about 6558.0515399012. The cubic root of 43008040 is about 350.3616398100.

Adding to 43008040 its reverse (4080034), we get a palindrome (47088074).

The spelling of 43008040 in words is "forty-three million, eight thousand, forty".