3 × 5² × 13 × 20521

Prime Factor Structure

Factorization String 3 × 5^2 × 13 × 20521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 35,626,192

Proper Divisor Sum 15,618,217

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #20007973 ← → #20007979

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

20,007,975 60,023,926 30,011,963 90,035,890 45,017,945 135,053,836 67,526,918 33,763,459 101,290,378 50,645,189 151,935,568 75,967,784 37,983,892 18,991,946 9,495,973 28,487,920 14,243,960 7,121,980 3,560,990 1,780,495 5,341,486 2,670,743 8,012,230 4,006,115 12,018,346 6,009,173 18,027,520 9,013,760 4,506,880 2,253,440 1,126,720 563,360 281,680 140,840 70,420 35,210 17,605 52,816 26,408 13,204 6,602 3,301 9,904 4,952 2,476 1,238 619 1,858 929 2,788 1,394 697 2,092 1,046 523 1,570 785 2,356 1,178 589

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