3⁴ × 19 × 13903

Prime Factor Structure

Factorization String 3^4 × 19 × 13903

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 33,647,680

Proper Divisor Sum 12,250,963

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #21396709 ← → #21396731

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

21,396,717 64,190,152 32,095,076 16,047,538 8,023,769 24,071,308 12,035,654 6,017,827 18,053,482 9,026,741 27,080,224 13,540,112 6,770,056 3,385,028 1,692,514 846,257 2,538,772 1,269,386 634,693 1,904,080 952,040 476,020 238,010 119,005 357,016 178,508 89,254 44,627 133,882 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.