λ
Sigma Notebook

387,689

59 × 6571
Deficient Odd Composite

387,689 is odd and not a perfect square. Its factorization is 59 × 6571 and its 4 divisors sum to 394,320.

Prime Factor Structure

Factorization String 59 × 6571
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 394,320
Proper Divisor Sum 6,631
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #387683 ← → #387707

Radix Representation

Decimal 387689
Binary 1011110101001101001 (19 bits)
Octal 0o1365151
Hexadecimal 0x5EA69

Divisor Catalog (4)

1 59 6,571 387,689

Collatz Trajectory (161 steps to reach 1)

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

387,689 1,163,068 581,534 290,767 872,302 436,151 1,308,454 654,227 1,962,682 981,341 2,944,024 1,472,012 736,006 368,003 1,104,010 552,005 1,656,016 828,008 414,004 207,002 103,501 310,504 155,252 77,626 38,813 116,440 58,220 29,110 14,555 43,666 21,833 65,500 32,750 16,375 49,126 24,563 73,690 36,845 110,536 55,268 27,634 13,817 41,452 20,726 10,363 31,090 15,545 46,636 23,318 11,659 34,978 17,489 52,468 26,234 13,117 39,352 19,676 9,838 4,919 14,758

More profiles

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