2² × 5² × 11 × 199

Prime Factor Structure

Factorization String 2^2 × 5^2 × 11 × 199

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 520,800

Proper Divisor Sum 301,900

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #218887 ← → #218923

1 2 4 5 10 11 20 22 25 44 50 55 100 110 199 220 275 398 550 796 995 1,100 1,990 2,189 3,980 4,378 4,975 8,756 9,950 10,945 19,900 21,890 43,780 54,725 109,450 218,900

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

218,900 109,450 54,725 164,176 82,088 41,044 20,522 10,261 30,784 15,392 7,696 3,848 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8

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