2² × 11² × 1381

Prime Factor Structure

Factorization String 2^2 × 11^2 × 1381

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 1,286,642

Proper Divisor Sum 618,238

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #668347 ← → #668407

1 2 4 11 22 44 121 242 484 1,381 2,762 5,524 15,191 30,382 60,764 167,101 334,202 668,404

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

668,404 334,202 167,101 501,304 250,652 125,326 62,663 187,990 93,995 281,986 140,993 422,980 211,490 105,745 317,236 158,618 79,309 237,928 118,964 59,482 29,741 89,224 44,612 22,306 11,153 33,460 16,730 8,365 25,096 12,548 6,274 3,137 9,412 4,706 2,353 7,060 3,530 1,765 5,296 2,648 1,324 662 331 994 497 1,492 746 373 1,120 560 280 140 70 35 106 53 160 80 40 20

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