215,508

2² × 3 × 17959

Prime Factor Structure

Factorization String 2^2 × 3 × 17959

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Total Divisors 12

Divisor Sum (σ) 502,880

Proper Divisor Sum 287,372

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #215507 ← → #215521

1 2 3 4 6 12 17,959 35,918 53,877 71,836 107,754 215,508

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

215,508 107,754 53,877 161,632 80,816 40,408 20,204 10,102 5,051 15,154 7,577 22,732 11,366 5,683 17,050 8,525 25,576 12,788 6,394 3,197 9,592 4,796 2,398 1,199 3,598 1,799 5,398 2,699 8,098 4,049 12,148 6,074 3,037 9,112 4,556 2,278 1,139 3,418 1,709 5,128 2,564 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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