2² × 5 × 31 × 641

Prime Factor Structure

Factorization String 2^2 × 5 × 31 × 641

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 862,848

Proper Divisor Sum 465,428

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #397379 ← → #397427

1 2 4 5 10 20 31 62 124 155 310 620 641 1,282 2,564 3,205 6,410 12,820 19,871 39,742 79,484 99,355 198,710 397,420

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

397,420 198,710 99,355 298,066 149,033 447,100 223,550 111,775 335,326 167,663 502,990 251,495 754,486 377,243 1,131,730 565,865 1,697,596 848,798 424,399 1,273,198 636,599 1,909,798 954,899 2,864,698 1,432,349 4,297,048 2,148,524 1,074,262 537,131 1,611,394 805,697 2,417,092 1,208,546 604,273 1,812,820 906,410 453,205 1,359,616 679,808 339,904 169,952 84,976 42,488 21,244 10,622 5,311 15,934 7,967 23,902 11,951 35,854 17,927 53,782 26,891 80,674 40,337 121,012 60,506 30,253 90,760

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