2² × 3² × 17789

Prime Factor Structure

Factorization String 2^2 × 3^2 × 17789

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 1,618,890

Proper Divisor Sum 978,486

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #640369 ← → #640411

1 2 3 4 6 9 12 18 36 17,789 35,578 53,367 71,156 106,734 160,101 213,468 320,202 640,404

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

640,404 320,202 160,101 480,304 240,152 120,076 60,038 30,019 90,058 45,029 135,088 67,544 33,772 16,886 8,443 25,330 12,665 37,996 18,998 9,499 28,498 14,249 42,748 21,374 10,687 32,062 16,031 48,094 24,047 72,142 36,071 108,214 54,107 162,322 81,161 243,484 121,742 60,871 182,614 91,307 273,922 136,961 410,884 205,442 102,721 308,164 154,082 77,041 231,124 115,562 57,781 173,344 86,672 43,336 21,668 10,834 5,417 16,252 8,126 4,063

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