3,978,010

2 × 5 × 199 × 1999

Prime Factor Structure

Factorization String 2 × 5 × 199 × 1999

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 7,200,000

Proper Divisor Sum 3,221,990

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #3977999 ← → #3978031

1 2 5 10 199 398 995 1,990 1,999 3,998 9,995 19,990 397,801 795,602 1,989,005 3,978,010

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

3,978,010 1,989,005 5,967,016 2,983,508 1,491,754 745,877 2,237,632 1,118,816 559,408 279,704 139,852 69,926 34,963 104,890 52,445 157,336 78,668 39,334 19,667 59,002 29,501 88,504 44,252 22,126 11,063 33,190 16,595 49,786 24,893 74,680 37,340 18,670 9,335 28,006 14,003 42,010 21,005 63,016 31,508 15,754 7,877 23,632 11,816 5,908 2,954 1,477 4,432 2,216 1,108 554 277 832 416 208 104 52 26 13 40 20

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