8,620,438

2 × 4310219

Starting at 8,620,438, the Collatz iteration reaches 1 after 168 steps. The first transition is 4310219; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 4310219

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 12,930,660

Proper Divisor Sum 4,310,222

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #8620429 ← → #8620499

Radix Representation

Decimal	8620438
Binary	100000111000100110010110 (24 bits)
Octal	0o40704626
Hexadecimal	0x838996

Divisor Catalog (4)

1 2 4,310,219 8,620,438

Collatz Trajectory (168 steps to reach 1)

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

8,620,438 4,310,219 12,930,658 6,465,329 19,395,988 9,697,994 4,848,997 14,546,992 7,273,496 3,636,748 1,818,374 909,187 2,727,562 1,363,781 4,091,344 2,045,672 1,022,836 511,418 255,709 767,128 383,564 191,782 95,891 287,674 143,837 431,512 215,756 107,878 53,939 161,818 80,909 242,728 121,364 60,682 30,341 91,024 45,512 22,756 11,378 5,689 17,068 8,534 4,267 12,802 6,401 19,204 9,602 4,801 14,404 7,202 3,601 10,804 5,402 2,701 8,104 4,052 2,026 1,013 3,040 1,520

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