2² × 5 × 19 × 41²

Prime Factor Structure

Factorization String 2^2 × 5 × 19 × 41^2

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 1,447,320

Proper Divisor Sum 808,540

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #638767 ← → #638801

1 2 4 5 10 19 20 38 41 76 82 95 164 190 205 380 410 779 820 1,558 1,681 3,116 3,362 3,895 6,724 7,790 8,405 15,580 16,810 31,939 33,620 63,878 127,756 159,695 319,390 638,780

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

638,780 319,390 159,695 479,086 239,543 718,630 359,315 1,077,946 538,973 1,616,920 808,460 404,230 202,115 606,346 303,173 909,520 454,760 227,380 113,690 56,845 170,536 85,268 42,634 21,317 63,952 31,976 15,988 7,994 3,997 11,992 5,996 2,998 1,499 4,498 2,249 6,748 3,374 1,687 5,062 2,531 7,594 3,797 11,392 5,696 2,848 1,424 712 356 178 89 268 134 67 202 101 304 152 76 38 19

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