2² × 5 × 7 × 1553

Prime Factor Structure

Factorization String 2^2 × 5 × 7 × 1553

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 522,144

Proper Divisor Sum 304,724

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #217411 ← → #217421

1 2 4 5 7 10 14 20 28 35 70 140 1,553 3,106 6,212 7,765 10,871 15,530 21,742 31,060 43,484 54,355 108,710 217,420

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

217,420 108,710 54,355 163,066 81,533 244,600 122,300 61,150 30,575 91,726 45,863 137,590 68,795 206,386 103,193 309,580 154,790 77,395 232,186 116,093 348,280 174,140 87,070 43,535 130,606 65,303 195,910 97,955 293,866 146,933 440,800 220,400 110,200 55,100 27,550 13,775 41,326 20,663 61,990 30,995 92,986 46,493 139,480 69,740 34,870 17,435 52,306 26,153 78,460 39,230 19,615 58,846 29,423 88,270 44,135 132,406 66,203 198,610 99,305 297,916

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