17,972,787

3 × 7 × 37 × 23131

Prime Factor Structure

Factorization String 3 × 7 × 37 × 23131

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 28,128,512

Proper Divisor Sum 10,155,725

Digit Sum / Digital Root 48 (Root: 3)

Adjacent Primes #17972783 ← → #17972789

1 3 7 21 37 111 259 777 23,131 69,393 161,917 485,751 855,847 2,567,541 5,990,929 17,972,787

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

17,972,787 53,918,362 26,959,181 80,877,544 40,438,772 20,219,386 10,109,693 30,329,080 15,164,540 7,582,270 3,791,135 11,373,406 5,686,703 17,060,110 8,530,055 25,590,166 12,795,083 38,385,250 19,192,625 57,577,876 28,788,938 14,394,469 43,183,408 21,591,704 10,795,852 5,397,926 2,698,963 8,096,890 4,048,445 12,145,336 6,072,668 3,036,334 1,518,167 4,554,502 2,277,251 6,831,754 3,415,877 10,247,632 5,123,816 2,561,908 1,280,954 640,477 1,921,432 960,716 480,358 240,179 720,538 360,269 1,080,808 540,404 270,202 135,101 405,304 202,652 101,326 50,663 151,990 75,995 227,986 113,993

Browse other published profiles and their separate link collections.

No other profiles in this collection.