2² × 7 × 23 × 809

Prime Factor Structure

Factorization String 2^2 × 7 × 23 × 809

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,088,640

Proper Divisor Sum 567,644

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #520981 ← → #521009

1 2 4 7 14 23 28 46 92 161 322 644 809 1,618 3,236 5,663 11,326 18,607 22,652 37,214 74,428 130,249 260,498 520,996

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

520,996 260,498 130,249 390,748 195,374 97,687 293,062 146,531 439,594 219,797 659,392 329,696 164,848 82,424 41,212 20,606 10,303 30,910 15,455 46,366 23,183 69,550 34,775 104,326 52,163 156,490 78,245 234,736 117,368 58,684 29,342 14,671 44,014 22,007 66,022 33,011 99,034 49,517 148,552 74,276 37,138 18,569 55,708 27,854 13,927 41,782 20,891 62,674 31,337 94,012 47,006 23,503 70,510 35,255 105,766 52,883 158,650 79,325 237,976 118,988

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