2 × 23 × 13921

Prime Factor Structure

Factorization String 2 × 23 × 13921

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,002,384

Proper Divisor Sum 362,018

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #640363 ← → #640369

1 2 23 46 13,921 27,842 320,183 640,366

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

640,366 320,183 960,550 480,275 1,440,826 720,413 2,161,240 1,080,620 540,310 270,155 810,466 405,233 1,215,700 607,850 303,925 911,776 455,888 227,944 113,972 56,986 28,493 85,480 42,740 21,370 10,685 32,056 16,028 8,014 4,007 12,022 6,011 18,034 9,017 27,052 13,526 6,763 20,290 10,145 30,436 15,218 7,609 22,828 11,414 5,707 17,122 8,561 25,684 12,842 6,421 19,264 9,632 4,816 2,408 1,204 602 301 904 452 226 113

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