2² × 13 × 31 × 509

Prime Factor Structure

Factorization String 2^2 × 13 × 31 × 509

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 1,599,360

Proper Divisor Sum 778,852

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #820489 ← → #820537

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

820,508 410,254 205,127 615,382 307,691 923,074 461,537 1,384,612 692,306 346,153 1,038,460 519,230 259,615 778,846 389,423 1,168,270 584,135 1,752,406 876,203 2,628,610 1,314,305 3,942,916 1,971,458 985,729 2,957,188 1,478,594 739,297 2,217,892 1,108,946 554,473 1,663,420 831,710 415,855 1,247,566 623,783 1,871,350 935,675 2,807,026 1,403,513 4,210,540 2,105,270 1,052,635 3,157,906 1,578,953 4,736,860 2,368,430 1,184,215 3,552,646 1,776,323 5,328,970 2,664,485 7,993,456 3,996,728 1,998,364 999,182 499,591 1,498,774 749,387 2,248,162 1,124,081

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