3,501,250

2 × 5⁴ × 2801

Starting at 3,501,250, the Collatz iteration reaches 1 after 71 steps. The first transition is 1750625; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2 × 5^4 × 2801

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 6,565,086

Proper Divisor Sum 3,063,836

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #3501247 ← → #3501259

Radix Representation

Decimal	3501250
Binary	1101010110110011000010 (22 bits)
Octal	0o15266302
Hexadecimal	0x356CC2

Divisor Catalog (20)

1 2 5 10 25 50 125 250 625 1,250 2,801 5,602 14,005 28,010 70,025 140,050 350,125 700,250 1,750,625 3,501,250

Collatz Trajectory (71 steps to reach 1)

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

3,501,250 1,750,625 5,251,876 2,625,938 1,312,969 3,938,908 1,969,454 984,727 2,954,182 1,477,091 4,431,274 2,215,637 6,646,912 3,323,456 1,661,728 830,864 415,432 207,716 103,858 51,929 155,788 77,894 38,947 116,842 58,421 175,264 87,632 43,816 21,908 10,954 5,477 16,432 8,216 4,108 2,054 1,027 3,082 1,541 4,624 2,312 1,156 578 289 868 434 217 652 326 163 490 245 736 368 184 92 46 23 70 35 106

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