3² × 5 × 7 × 61

Prime Factor Structure

Factorization String 3^2 × 5 × 7 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 38,688

Proper Divisor Sum 19,473

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #19213 ← → #19219

1 3 5 7 9 15 21 35 45 61 63 105 183 305 315 427 549 915 1,281 2,135 2,745 3,843 6,405 19,215

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

19,215 57,646 28,823 86,470 43,235 129,706 64,853 194,560 97,280 48,640 24,320 12,160 6,080 3,040 1,520 760 380 190 95 286 143 430 215 646 323 970 485 1,456 728 364 182 91 274 137 412 206 103 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445 1,336 668 334 167 502 251 754

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