9,855,778

2 × 401 × 12289

Starting at 9,855,778, the Collatz iteration reaches 1 after 176 steps. The first transition is 4927889; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 401 × 12289

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 14,821,740

Proper Divisor Sum 4,965,962

Digit Sum / Digital Root 49 (Root: 4)

Adjacent Primes #9855743 ← → #9855787

Radix Representation

Decimal	9855778
Binary	100101100110001100100010 (24 bits)
Octal	0o45461442
Hexadecimal	0x966322

Divisor Catalog (8)

1 2 401 802 12,289 24,578 4,927,889 9,855,778

Collatz Trajectory (176 steps to reach 1)

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

9,855,778 4,927,889 14,783,668 7,391,834 3,695,917 11,087,752 5,543,876 2,771,938 1,385,969 4,157,908 2,078,954 1,039,477 3,118,432 1,559,216 779,608 389,804 194,902 97,451 292,354 146,177 438,532 219,266 109,633 328,900 164,450 82,225 246,676 123,338 61,669 185,008 92,504 46,252 23,126 11,563 34,690 17,345 52,036 26,018 13,009 39,028 19,514 9,757 29,272 14,636 7,318 3,659 10,978 5,489 16,468 8,234 4,117 12,352 6,176 3,088 1,544 772 386 193 580 290

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