2 × 5² × 13 × 991

Prime Factor Structure

Factorization String 2 × 5^2 × 13 × 991

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,291,584

Proper Divisor Sum 647,434

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #644143 ← → #644153

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

644,150 322,075 966,226 483,113 1,449,340 724,670 362,335 1,087,006 543,503 1,630,510 815,255 2,445,766 1,222,883 3,668,650 1,834,325 5,502,976 2,751,488 1,375,744 687,872 343,936 171,968 85,984 42,992 21,496 10,748 5,374 2,687 8,062 4,031 12,094 6,047 18,142 9,071 27,214 13,607 40,822 20,411 61,234 30,617 91,852 45,926 22,963 68,890 34,445 103,336 51,668 25,834 12,917 38,752 19,376 9,688 4,844 2,422 1,211 3,634 1,817 5,452 2,726 1,363 4,090

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