2² × 13 × 101 × 4019

Prime Factor Structure

Factorization String 2^2 × 13 × 101 × 4019

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 40,183,920

Proper Divisor Sum 19,076,132

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #21107777 ← → #21107789

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

21,107,788 10,553,894 5,276,947 15,830,842 7,915,421 23,746,264 11,873,132 5,936,566 2,968,283 8,904,850 4,452,425 13,357,276 6,678,638 3,339,319 10,017,958 5,008,979 15,026,938 7,513,469 22,540,408 11,270,204 5,635,102 2,817,551 8,452,654 4,226,327 12,678,982 6,339,491 19,018,474 9,509,237 28,527,712 14,263,856 7,131,928 3,565,964 1,782,982 891,491 2,674,474 1,337,237 4,011,712 2,005,856 1,002,928 501,464 250,732 125,366 62,683 188,050 94,025 282,076 141,038 70,519 211,558 105,779 317,338 158,669 476,008 238,004 119,002 59,501 178,504 89,252 44,626 22,313

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