λ
Sequence Observatory

3,258,500

22 × 53 × 73 × 19
Abundant Even Composite

Starting at 3,258,500, the Collatz iteration reaches 1 after 208 steps. The first transition is 1629250; the starting value is even with 96 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5^3 × 7^3 × 19
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 96
Divisor Sum (σ) 8,736,000
Proper Divisor Sum 5,477,500
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #3258499 ← → #3258523

Radix Representation

Decimal 3258500
Binary 1100011011100010000100 (22 bits)
Octal 0o14334204
Hexadecimal 0x31B884

Divisor Catalog (60 of 96)

1 2 4 5 7 10 14 19 20 25 28 35 38 49 50 70 76 95 98 100 125 133 140 175 190 196 245 250 266 343 350 380 475 490 500 532 665 686 700 875 931 950 980 1,225 1,330 1,372 1,715 1,750 1,862 1,900 2,375 2,450 2,660 3,325 3,430 3,500 3,724 4,655 4,750 4,900

Collatz Trajectory (208 steps to reach 1)

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

3,258,500 1,629,250 814,625 2,443,876 1,221,938 610,969 1,832,908 916,454 458,227 1,374,682 687,341 2,062,024 1,031,012 515,506 257,753 773,260 386,630 193,315 579,946 289,973 869,920 434,960 217,480 108,740 54,370 27,185 81,556 40,778 20,389 61,168 30,584 15,292 7,646 3,823 11,470 5,735 17,206 8,603 25,810 12,905 38,716 19,358 9,679 29,038 14,519 43,558 21,779 65,338 32,669 98,008 49,004 24,502 12,251 36,754 18,377 55,132 27,566 13,783 41,350 20,675

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