2 × 3² × 35573

Prime Factor Structure

Factorization String 2 × 3^2 × 35573

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,387,386

Proper Divisor Sum 747,072

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #640307 ← → #640333

1 2 3 6 9 18 35,573 71,146 106,719 213,438 320,157 640,314

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

640,314 320,157 960,472 480,236 240,118 120,059 360,178 180,089 540,268 270,134 135,067 405,202 202,601 607,804 303,902 151,951 455,854 227,927 683,782 341,891 1,025,674 512,837 1,538,512 769,256 384,628 192,314 96,157 288,472 144,236 72,118 36,059 108,178 54,089 162,268 81,134 40,567 121,702 60,851 182,554 91,277 273,832 136,916 68,458 34,229 102,688 51,344 25,672 12,836 6,418 3,209 9,628 4,814 2,407 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.