5 × 31² × 61 × 73

Prime Factor Structure

Factorization String 5 × 31^2 × 61 × 73

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 27,335,304

Proper Divisor Sum 5,938,639

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #21396649 ← → #21396667

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

21,396,665 64,189,996 32,094,998 16,047,499 48,142,498 24,071,249 72,213,748 36,106,874 18,053,437 54,160,312 27,080,156 13,540,078 6,770,039 20,310,118 10,155,059 30,465,178 15,232,589 45,697,768 22,848,884 11,424,442 5,712,221 17,136,664 8,568,332 4,284,166 2,142,083 6,426,250 3,213,125 9,639,376 4,819,688 2,409,844 1,204,922 602,461 1,807,384 903,692 451,846 225,923 677,770 338,885 1,016,656 508,328 254,164 127,082 63,541 190,624 95,312 47,656 23,828 11,914 5,957 17,872 8,936 4,468 2,234 1,117 3,352 1,676 838 419 1,258 629

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