639,048

2³ × 3 × 26627

Starting at 639,048, the Collatz iteration reaches 1 after 79 steps. The first transition is 319524; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 3 × 26627

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,597,680

Proper Divisor Sum 958,632

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #639043 ← → #639049

Radix Representation

Decimal	639048
Binary	10011100000001001000 (20 bits)
Octal	0o2340110
Hexadecimal	0x9C048

Divisor Catalog (16)

1 2 3 4 6 8 12 24 26,627 53,254 79,881 106,508 159,762 213,016 319,524 639,048

Collatz Trajectory (79 steps to reach 1)

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

639,048 319,524 159,762 79,881 239,644 119,822 59,911 179,734 89,867 269,602 134,801 404,404 202,202 101,101 303,304 151,652 75,826 37,913 113,740 56,870 28,435 85,306 42,653 127,960 63,980 31,990 15,995 47,986 23,993 71,980 35,990 17,995 53,986 26,993 80,980 40,490 20,245 60,736 30,368 15,184 7,592 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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