43947028 has 12 divisors (see below), whose sum is σ = 76974772. Its totient is φ = 21954240.

The previous prime is 43947011. The next prime is 43947031. The reversal of 43947028 is 82074934.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42146064 + 1800964 = 6492^2 + 1342^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1126 + ... + 9442.

Almost surely, 2^43947028 is an apocalyptic number.

It is an amenable number.

43947028 is a deficient number, since it is larger than the sum of its proper divisors (33027744).

43947028 is a wasteful number, since it uses less digits than its factorization.

43947028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9642 (or 9640 counting only the distinct ones).

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

The square root of 43947028 is about 6629.2554634740. The cubic root of 43947028 is about 352.8931026919.

The spelling of 43947028 in words is "forty-three million, nine hundred forty-seven thousand, twenty-eight".