72043443 has 12 divisors (see below), whose sum is σ = 104501280. Its totient is φ = 47826576.

The previous prime is 72043369. The next prime is 72043451. The reversal of 72043443 is 34434027.

It is a de Polignac number, because none of the positive numbers 2^k-72043443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72043463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14596 + ... + 18897.

It is an arithmetic number, because the mean of its divisors is an integer number (8708440).

Almost surely, 2^72043443 is an apocalyptic number.

72043443 is a deficient number, since it is larger than the sum of its proper divisors (32457837).

72043443 is a wasteful number, since it uses less digits than its factorization.

72043443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33738 (or 33735 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 72043443 is about 8487.8408915342. The cubic root of 72043443 is about 416.1004191594.

The spelling of 72043443 in words is "seventy-two million, forty-three thousand, four hundred forty-three".