2² × 67 × 2389

Prime Factor Structure

Factorization String 2^2 × 67 × 2389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,137,640

Proper Divisor Sum 497,388

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #640249 ← → #640259

1 2 4 67 134 268 2,389 4,778 9,556 160,063 320,126 640,252

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

640,252 320,126 160,063 480,190 240,095 720,286 360,143 1,080,430 540,215 1,620,646 810,323 2,430,970 1,215,485 3,646,456 1,823,228 911,614 455,807 1,367,422 683,711 2,051,134 1,025,567 3,076,702 1,538,351 4,615,054 2,307,527 6,922,582 3,461,291 10,383,874 5,191,937 15,575,812 7,787,906 3,893,953 11,681,860 5,840,930 2,920,465 8,761,396 4,380,698 2,190,349 6,571,048 3,285,524 1,642,762 821,381 2,464,144 1,232,072 616,036 308,018 154,009 462,028 231,014 115,507 346,522 173,261 519,784 259,892 129,946 64,973 194,920 97,460 48,730 24,365

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