2² × 5² × 7² × 131

Prime Factor Structure

Factorization String 2^2 × 5^2 × 7^2 × 131

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 54

Divisor Sum (σ) 1,632,708

Proper Divisor Sum 990,808

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #641897 ← → #641909

1 2 4 5 7 10 14 20 25 28 35 49 50 70 98 100 131 140 175 196 245 262 350 490 524 655 700 917 980 1,225 1,310 1,834 2,450 2,620 3,275 3,668 4,585 4,900 6,419 6,550 9,170 12,838 13,100 18,340 22,925 25,676 32,095 45,850 64,190 91,700 128,380 160,475 320,950 641,900

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

641,900 320,950 160,475 481,426 240,713 722,140 361,070 180,535 541,606 270,803 812,410 406,205 1,218,616 609,308 304,654 152,327 456,982 228,491 685,474 342,737 1,028,212 514,106 257,053 771,160 385,580 192,790 96,395 289,186 144,593 433,780 216,890 108,445 325,336 162,668 81,334 40,667 122,002 61,001 183,004 91,502 45,751 137,254 68,627 205,882 102,941 308,824 154,412 77,206 38,603 115,810 57,905 173,716 86,858 43,429 130,288 65,144 32,572 16,286 8,143 24,430

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