72944543 has 8 divisors (see below), whose sum is σ = 83798688. Its totient is φ = 62198784.

The previous prime is 72944533. The next prime is 72944549. The reversal of 72944543 is 34544927.

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

It is a cyclic number.

It is not a de Polignac number, because 72944543 - 2⁴ = 72944527 is a prime.

It is a super-3 number, since 3×72944543³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72944497 and 72944506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72944549) 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, 25646 + ... + 28347.

It is an arithmetic number, because the mean of its divisors is an integer number (10474836).

Almost surely, 2^72944543 is an apocalyptic number.

72944543 is a deficient number, since it is larger than the sum of its proper divisors (10854145).

72944543 is a wasteful number, since it uses less digits than its factorization.

72944543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54193.

The product of its digits is 120960, while the sum is 38.

The square root of 72944543 is about 8540.7577532676. The cubic root of 72944543 is about 417.8280601266.

The spelling of 72944543 in words is "seventy-two million, nine hundred forty-four thousand, five hundred forty-three".