2² × 7 × 720439

Prime Factor Structure

Factorization String 2^2 × 7 × 720439

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 40,344,640

Proper Divisor Sum 20,172,348

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #20172283 ← → #20172323

1 2 4 7 14 28 720,439 1,440,878 2,881,756 5,043,073 10,086,146 20,172,292

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

20,172,292 10,086,146 5,043,073 15,129,220 7,564,610 3,782,305 11,346,916 5,673,458 2,836,729 8,510,188 4,255,094 2,127,547 6,382,642 3,191,321 9,573,964 4,786,982 2,393,491 7,180,474 3,590,237 10,770,712 5,385,356 2,692,678 1,346,339 4,039,018 2,019,509 6,058,528 3,029,264 1,514,632 757,316 378,658 189,329 567,988 283,994 141,997 425,992 212,996 106,498 53,249 159,748 79,874 39,937 119,812 59,906 29,953 89,860 44,930 22,465 67,396 33,698 16,849 50,548 25,274 12,637 37,912 18,956 9,478 4,739 14,218 7,109 21,328

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