43531968 has 56 divisors (see below), whose sum is σ = 121962672. Its totient is φ = 13656064.

The previous prime is 43531963. The next prime is 43531993. The reversal of 43531968 is 86913534.

It is not an unprimeable number, because it can be changed into a prime (43531963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3405 + ... + 9932.

Almost surely, 2^43531968 is an apocalyptic number.

43531968 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

43531968 is an abundant number, since it is smaller than the sum of its proper divisors (78430704).

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

43531968 is a wasteful number, since it uses less digits than its factorization.

43531968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369 (or 13359 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 43531968 is about 6597.8760218725. The cubic root of 43531968 is about 351.7786142351.

The spelling of 43531968 in words is "forty-three million, five hundred thirty-one thousand, nine hundred sixty-eight".