72976543 has 8 divisors (see below), whose sum is σ = 75226320. Its totient is φ = 70741440.

The previous prime is 72976537. The next prime is 72976559. The reversal of 72976543 is 34567927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72976543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72976543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72976523) 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 7 ways as a sum of consecutive naturals, for example, 6888 + ... + 13906.

It is an arithmetic number, because the mean of its divisors is an integer number (9403290).

Almost surely, 2^72976543 is an apocalyptic number.

72976543 is a deficient number, since it is larger than the sum of its proper divisors (2249777).

72976543 is a wasteful number, since it uses less digits than its factorization.

72976543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337.

The product of its digits is 317520, while the sum is 43.

The square root of 72976543 is about 8542.6309179315. The cubic root of 72976543 is about 417.8891501122.

The spelling of 72976543 in words is "seventy-two million, nine hundred seventy-six thousand, five hundred forty-three".