43982740 has 24 divisors (see below), whose sum is σ = 97797672. Its totient is φ = 16558080.

The previous prime is 43982737. The next prime is 43982747. The reversal of 43982740 is 4728934.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12645136 + 31337604 = 3556^2 + 5598^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 43982740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43982747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64341 + ... + 65020.

It is an arithmetic number, because the mean of its divisors is an integer number (4074903).

Almost surely, 2^43982740 is an apocalyptic number.

It is an amenable number.

43982740 is an abundant number, since it is smaller than the sum of its proper divisors (53814932).

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

43982740 is a wasteful number, since it uses less digits than its factorization.

43982740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129387 (or 129385 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 43982740 is about 6631.9484316451. The cubic root of 43982740 is about 352.9886655163.

The spelling of 43982740 in words is "forty-three million, nine hundred eighty-two thousand, seven hundred forty".