43181982 has 48 divisors (see below), whose sum is σ = 96623280. Its totient is φ = 13931136.

The previous prime is 43181981. The next prime is 43182053. The reversal of 43181982 is 28918134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43181981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77248 + ... + 77804.

It is an arithmetic number, because the mean of its divisors is an integer number (2012985).

Almost surely, 2^43181982 is an apocalyptic number.

43181982 is an abundant number, since it is smaller than the sum of its proper divisors (53441298).

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

43181982 is a wasteful number, since it uses less digits than its factorization.

43181982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 694 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 43181982 is about 6571.2998714105. The cubic root of 43181982 is about 350.8333394393.

The spelling of 43181982 in words is "forty-three million, one hundred eighty-one thousand, nine hundred eighty-two".