12,780

2² × 3² × 5 × 71

Prime Factor Structure

Factorization String 2^2 × 3^2 × 5 × 71

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 36

Divisor Sum (σ) 39,312

Proper Divisor Sum 26,532

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #12763 ← → #12781

1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 71 90 142 180 213 284 355 426 639 710 852 1,065 1,278 1,420 2,130 2,556 3,195 4,260 6,390 12,780

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

12,780 6,390 3,195 9,586 4,793 14,380 7,190 3,595 10,786 5,393 16,180 8,090 4,045 12,136 6,068 3,034 1,517 4,552 2,276 1,138 569 1,708 854 427 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14

Browse other published profiles and their separate link collections.

No other profiles in this collection.