2 × 3 × 23 × 4639

Prime Factor Structure

Factorization String 2 × 3 × 23 × 4639

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,336,320

Proper Divisor Sum 696,138

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #640163 ← → #640193

1 2 3 6 23 46 69 138 4,639 9,278 13,917 27,834 106,697 213,394 320,091 640,182

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

640,182 320,091 960,274 480,137 1,440,412 720,206 360,103 1,080,310 540,155 1,620,466 810,233 2,430,700 1,215,350 607,675 1,823,026 911,513 2,734,540 1,367,270 683,635 2,050,906 1,025,453 3,076,360 1,538,180 769,090 384,545 1,153,636 576,818 288,409 865,228 432,614 216,307 648,922 324,461 973,384 486,692 243,346 121,673 365,020 182,510 91,255 273,766 136,883 410,650 205,325 615,976 307,988 153,994 76,997 230,992 115,496 57,748 28,874 14,437 43,312 21,656 10,828 5,414 2,707 8,122 4,061

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