5 × 13² × 73 × 349

Prime Factor Structure

Factorization String 5 × 13^2 × 73 × 349

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 28,438,200

Proper Divisor Sum 6,910,135

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #21528037 ← → #21528071

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

21,528,065 64,584,196 32,292,098 16,146,049 48,438,148 24,219,074 12,109,537 36,328,612 18,164,306 9,082,153 27,246,460 13,623,230 6,811,615 20,434,846 10,217,423 30,652,270 15,326,135 45,978,406 22,989,203 68,967,610 34,483,805 103,451,416 51,725,708 25,862,854 12,931,427 38,794,282 19,397,141 58,191,424 29,095,712 14,547,856 7,273,928 3,636,964 1,818,482 909,241 2,727,724 1,363,862 681,931 2,045,794 1,022,897 3,068,692 1,534,346 767,173 2,301,520 1,150,760 575,380 287,690 143,845 431,536 215,768 107,884 53,942 26,971 80,914 40,457 121,372 60,686 30,343 91,030 45,515 136,546

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