2² × 5 × 173 × 199

Prime Factor Structure

Factorization String 2^2 × 5 × 173 × 199

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,461,600

Proper Divisor Sum 773,060

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #688531 ← → #688543

1 2 4 5 10 20 173 199 346 398 692 796 865 995 1,730 1,990 3,460 3,980 34,427 68,854 137,708 172,135 344,270 688,540

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

688,540 344,270 172,135 516,406 258,203 774,610 387,305 1,161,916 580,958 290,479 871,438 435,719 1,307,158 653,579 1,960,738 980,369 2,941,108 1,470,554 735,277 2,205,832 1,102,916 551,458 275,729 827,188 413,594 206,797 620,392 310,196 155,098 77,549 232,648 116,324 58,162 29,081 87,244 43,622 21,811 65,434 32,717 98,152 49,076 24,538 12,269 36,808 18,404 9,202 4,601 13,804 6,902 3,451 10,354 5,177 15,532 7,766 3,883 11,650 5,825 17,476 8,738 4,369

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