## Happy Yellow Pig Day!

### Properties of the number 7172016:

7172016 = 2^{4}× 3 × 149417 is the 6684444

^{th}composite number and is not squarefree.

7172016 has 3 distinct prime factors, 20 divisors, 11 antidivisors and 2390656 totatives.

Reversing the decimal digits of 7172016 results in a semiprime.

7172016 = 1793005

^{2}- 1793003

^{2}= 896504

^{2}- 896500

^{2}= 597671

^{2}- 597665

^{2}= 448255

^{2}- 448247

^{2}= 298840

^{2}- 298828

^{2}= 149429

^{2}- 149405

^{2}is the difference of 2 nonnegative squares in 6 ways.

7172016 is the difference of 2 positive pentagonal numbers in 1 way.

7172016 = 380

^{2}+ 404

^{2}+ 2620

^{2}is the sum of 3 positive squares.

7172016

^{2}= 2765184

^{2}+ 6617520

^{2}is the sum of 2 positive squares in 1 way.

7172016

^{2}is the sum of 3 positive squares.

7172016 is a divisor of 1447

^{8}- 1.

7172016 is palindromic in (at least) base -79.

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