λ
Sequence Observatory

487,862

2 × 243931
Deficient Even Composite

Starting at 487,862, the Collatz iteration reaches 1 after 125 steps. The first transition is 243931; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 243931
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 731,796
Proper Divisor Sum 243,934
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #487843 ← → #487873

Radix Representation

Decimal 487862
Binary 1110111000110110110 (19 bits)
Octal 0o1670666
Hexadecimal 0x771B6

Divisor Catalog (4)

1 2 243,931 487,862

Collatz Trajectory (125 steps to reach 1)

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

487,862 243,931 731,794 365,897 1,097,692 548,846 274,423 823,270 411,635 1,234,906 617,453 1,852,360 926,180 463,090 231,545 694,636 347,318 173,659 520,978 260,489 781,468 390,734 195,367 586,102 293,051 879,154 439,577 1,318,732 659,366 329,683 989,050 494,525 1,483,576 741,788 370,894 185,447 556,342 278,171 834,514 417,257 1,251,772 625,886 312,943 938,830 469,415 1,408,246 704,123 2,112,370 1,056,185 3,168,556 1,584,278 792,139 2,376,418 1,188,209 3,564,628 1,782,314 891,157 2,673,472 1,336,736 668,368

More profiles

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