72435443 has 4 divisors (see below), whose sum is σ = 72455688. Its totient is φ = 72415200.

The previous prime is 72435431. The next prime is 72435449. The reversal of 72435443 is 34453427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72435443 - 2⁴ = 72435427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72435449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 12443.

It is an arithmetic number, because the mean of its divisors is an integer number (18113922).

Almost surely, 2^72435443 is an apocalyptic number.

72435443 is a deficient number, since it is larger than the sum of its proper divisors (20245).

72435443 is a wasteful number, since it uses less digits than its factorization.

72435443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244.

The product of its digits is 40320, while the sum is 32.

The square root of 72435443 is about 8510.9014211187. The cubic root of 72435443 is about 416.8537443299.

The spelling of 72435443 in words is "seventy-two million, four hundred thirty-five thousand, four hundred forty-three".