2⁴ × 5 × 8009

Prime Factor Structure

Factorization String 2^4 × 5 × 8009

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 1,489,860

Proper Divisor Sum 849,140

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #640691 ← → #640727

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

640,720 320,360 160,180 80,090 40,045 120,136 60,068 30,034 15,017 45,052 22,526 11,263 33,790 16,895 50,686 25,343 76,030 38,015 114,046 57,023 171,070 85,535 256,606 128,303 384,910 192,455 577,366 288,683 866,050 433,025 1,299,076 649,538 324,769 974,308 487,154 243,577 730,732 365,366 182,683 548,050 274,025 822,076 411,038 205,519 616,558 308,279 924,838 462,419 1,387,258 693,629 2,080,888 1,040,444 520,222 260,111 780,334 390,167 1,170,502 585,251 1,755,754 877,877

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