15,620

2² × 5 × 11 × 71

Prime Factor Structure

Factorization String 2^2 × 5 × 11 × 71

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 24

Divisor Sum (σ) 36,288

Proper Divisor Sum 20,668

Digit Sum / Digital Root 14 (Root: 5)

Adjacent Primes #15619 ← → #15629

1 2 4 5 10 11 20 22 44 55 71 110 142 220 284 355 710 781 1,420 1,562 3,124 3,905 7,810 15,620

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

15,620 7,810 3,905 11,716 5,858 2,929 8,788 4,394 2,197 6,592 3,296 1,648 824 412 206 103 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445 1,336 668 334 167 502 251 754 377 1,132 566 283 850 425 1,276 638 319 958 479 1,438 719 2,158 1,079 3,238 1,619 4,858 2,429 7,288 3,644

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