3² × 5 × 61 × 79

Prime Factor Structure

Factorization String 3^2 × 5 × 61 × 79

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 386,880

Proper Divisor Sum 170,025

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #216851 ← → #216859

1 3 5 9 15 45 61 79 183 237 305 395 549 711 915 1,185 2,745 3,555 4,819 14,457 24,095 43,371 72,285 216,855

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

216,855 650,566 325,283 975,850 487,925 1,463,776 731,888 365,944 182,972 91,486 45,743 137,230 68,615 205,846 102,923 308,770 154,385 463,156 231,578 115,789 347,368 173,684 86,842 43,421 130,264 65,132 32,566 16,283 48,850 24,425 73,276 36,638 18,319 54,958 27,479 82,438 41,219 123,658 61,829 185,488 92,744 46,372 23,186 11,593 34,780 17,390 8,695 26,086 13,043 39,130 19,565 58,696 29,348 14,674 7,337 22,012 11,006 5,503 16,510 8,255

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