2² × 5 × 199489

Prime Factor Structure

Factorization String 2^2 × 5 × 199489

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 8,378,580

Proper Divisor Sum 4,388,800

Digit Sum / Digital Root 44 (Root: 8)

Adjacent Primes #3989761 ← → #3989801

1 2 4 5 10 20 199,489 398,978 797,956 997,445 1,994,890 3,989,780

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

3,989,780 1,994,890 997,445 2,992,336 1,496,168 748,084 374,042 187,021 561,064 280,532 140,266 70,133 210,400 105,200 52,600 26,300 13,150 6,575 19,726 9,863 29,590 14,795 44,386 22,193 66,580 33,290 16,645 49,936 24,968 12,484 6,242 3,121 9,364 4,682 2,341 7,024 3,512 1,756 878 439 1,318 659 1,978 989 2,968 1,484 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236 118

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