2² × 5² × 19919

Prime Factor Structure

Factorization String 2^2 × 5^2 × 19919

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 4,322,640

Proper Divisor Sum 2,330,740

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1991893 ← → #1991911

1 2 4 5 10 20 25 50 100 19,919 39,838 79,676 99,595 199,190 398,380 497,975 995,950 1,991,900

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

1,991,900 995,950 497,975 1,493,926 746,963 2,240,890 1,120,445 3,361,336 1,680,668 840,334 420,167 1,260,502 630,251 1,890,754 945,377 2,836,132 1,418,066 709,033 2,127,100 1,063,550 531,775 1,595,326 797,663 2,392,990 1,196,495 3,589,486 1,794,743 5,384,230 2,692,115 8,076,346 4,038,173 12,114,520 6,057,260 3,028,630 1,514,315 4,542,946 2,271,473 6,814,420 3,407,210 1,703,605 5,110,816 2,555,408 1,277,704 638,852 319,426 159,713 479,140 239,570 119,785 359,356 179,678 89,839 269,518 134,759 404,278 202,139 606,418 303,209 909,628 454,814

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.