3² × 5 × 37 × 71 × 181

Prime Factor Structure

Factorization String 3^2 × 5 × 37 × 71 × 181

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 38,840,256

Proper Divisor Sum 17,443,341

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #21396901 ← → #21396917

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

21,396,915 64,190,746 32,095,373 96,286,120 48,143,060 24,071,530 12,035,765 36,107,296 18,053,648 9,026,824 4,513,412 2,256,706 1,128,353 3,385,060 1,692,530 846,265 2,538,796 1,269,398 634,699 1,904,098 952,049 2,856,148 1,428,074 714,037 2,142,112 1,071,056 535,528 267,764 133,882 66,941 200,824 100,412 50,206 25,103 75,310 37,655 112,966 56,483 169,450 84,725 254,176 127,088 63,544 31,772 15,886 7,943 23,830 11,915 35,746 17,873 53,620 26,810 13,405 40,216 20,108 10,054 5,027 15,082 7,541 22,624

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