638,891

11 × 241²

638,891 factors as 11 × 241^2. Its 6 positive divisors give a proper-divisor sum of 60,985, so this integer is deficient. The Collatz stopping time is 79 steps.

Prime Factor Structure

Factorization String 11 × 241^2

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 699,876

Proper Divisor Sum 60,985

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #638861 ← → #638893

Radix Representation

Decimal	638891
Binary	10011011111110101011 (20 bits)
Octal	0o2337653
Hexadecimal	0x9BFAB

Divisor Catalog (6)

1 11 241 2,651 58,081 638,891

Collatz Trajectory (79 steps to reach 1)

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

638,891 1,916,674 958,337 2,875,012 1,437,506 718,753 2,156,260 1,078,130 539,065 1,617,196 808,598 404,299 1,212,898 606,449 1,819,348 909,674 454,837 1,364,512 682,256 341,128 170,564 85,282 42,641 127,924 63,962 31,981 95,944 47,972 23,986 11,993 35,980 17,990 8,995 26,986 13,493 40,480 20,240 10,120 5,060 2,530 1,265 3,796 1,898 949 2,848 1,424 712 356 178 89 268 134 67 202 101 304 152 76 38 19

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