2² × 5⁴ × 43 × 199

Prime Factor Structure

Factorization String 2^2 × 5^4 × 43 × 199

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 60

Divisor Sum (σ) 48,109,600

Proper Divisor Sum 26,717,100

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #21392491 ← → #21392509

1 2 4 5 10 20 25 43 50 86 100 125 172 199 215 250 398 430 500 625 796 860 995 1,075 1,250 1,990 2,150 2,500 3,980 4,300 4,975 5,375 8,557 9,950 10,750 17,114 19,900 21,500 24,875 26,875 34,228 42,785 49,750 53,750 85,570 99,500 107,500 124,375 171,140 213,925 248,750 427,850 497,500 855,700 1,069,625 2,139,250 4,278,500 5,348,125 10,696,250 21,392,500

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

21,392,500 10,696,250 5,348,125 16,044,376 8,022,188 4,011,094 2,005,547 6,016,642 3,008,321 9,024,964 4,512,482 2,256,241 6,768,724 3,384,362 1,692,181 5,076,544 2,538,272 1,269,136 634,568 317,284 158,642 79,321 237,964 118,982 59,491 178,474 89,237 267,712 133,856 66,928 33,464 16,732 8,366 4,183 12,550 6,275 18,826 9,413 28,240 14,120 7,060 3,530 1,765 5,296 2,648 1,324 662 331 994 497 1,492 746 373 1,120 560 280 140 70 35 106

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