2 × 5 × 43 × 1489

Prime Factor Structure

Factorization String 2 × 5 × 43 × 1489

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,180,080

Proper Divisor Sum 539,810

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #640267 ← → #640279

1 2 5 10 43 86 215 430 1,489 2,978 7,445 14,890 64,027 128,054 320,135 640,270

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

640,270 320,135 960,406 480,203 1,440,610 720,305 2,160,916 1,080,458 540,229 1,620,688 810,344 405,172 202,586 101,293 303,880 151,940 75,970 37,985 113,956 56,978 28,489 85,468 42,734 21,367 64,102 32,051 96,154 48,077 144,232 72,116 36,058 18,029 54,088 27,044 13,522 6,761 20,284 10,142 5,071 15,214 7,607 22,822 11,411 34,234 17,117 51,352 25,676 12,838 6,419 19,258 9,629 28,888 14,444 7,222 3,611 10,834 5,417 16,252 8,126 4,063

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