9,128,440

2³ × 5 × 228211

Starting at 9,128,440, the Collatz iteration reaches 1 after 269 steps. The first transition is 4564220; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 5 × 228211

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 20,539,080

Proper Divisor Sum 11,410,640

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #9128419 ← → #9128443

Radix Representation

Decimal	9128440
Binary	100010110100100111111000 (24 bits)
Octal	0o42644770
Hexadecimal	0x8B49F8

Divisor Catalog (16)

1 2 4 5 8 10 20 40 228,211 456,422 912,844 1,141,055 1,825,688 2,282,110 4,564,220 9,128,440

Collatz Trajectory (269 steps to reach 1)

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

9,128,440 4,564,220 2,282,110 1,141,055 3,423,166 1,711,583 5,134,750 2,567,375 7,702,126 3,851,063 11,553,190 5,776,595 17,329,786 8,664,893 25,994,680 12,997,340 6,498,670 3,249,335 9,748,006 4,874,003 14,622,010 7,311,005 21,933,016 10,966,508 5,483,254 2,741,627 8,224,882 4,112,441 12,337,324 6,168,662 3,084,331 9,252,994 4,626,497 13,879,492 6,939,746 3,469,873 10,409,620 5,204,810 2,602,405 7,807,216 3,903,608 1,951,804 975,902 487,951 1,463,854 731,927 2,195,782 1,097,891 3,293,674 1,646,837 4,940,512 2,470,256 1,235,128 617,564 308,782 154,391 463,174 231,587 694,762 347,381

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