72730443 has 8 divisors (see below), whose sum is σ = 98421568. Its totient is φ = 47763144.

The previous prime is 72730409. The next prime is 72730457. The reversal of 72730443 is 34403727.

72730443 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72730443 - 2¹² = 72726347 is a prime.

It is a super-4 number, since 4×72730443⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a zygodrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 72730443.

It is not an unprimeable number, because it can be changed into a prime (72737443) 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, 180721 + ... + 181122.

It is an arithmetic number, because the mean of its divisors is an integer number (12302696).

Almost surely, 2^72730443 is an apocalyptic number.

72730443 is a deficient number, since it is larger than the sum of its proper divisors (25691125).

72730443 is a wasteful number, since it uses less digits than its factorization.

72730443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361913.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 72730443 is about 8528.2145259134. The cubic root of 72730443 is about 417.4188695785.

The spelling of 72730443 in words is "seventy-two million, seven hundred thirty thousand, four hundred forty-three".