3,855,646

2 × 1927823

Starting at 3,855,646, the Collatz iteration reaches 1 after 172 steps. The first transition is 1927823; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 1927823

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 5,783,472

Proper Divisor Sum 1,927,826

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #3855623 ← → #3855647

Radix Representation

Decimal	3855646
Binary	1110101101010100011110 (22 bits)
Octal	0o16552436
Hexadecimal	0x3AD51E

Divisor Catalog (4)

1 2 1,927,823 3,855,646

Collatz Trajectory (172 steps to reach 1)

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

3,855,646 1,927,823 5,783,470 2,891,735 8,675,206 4,337,603 13,012,810 6,506,405 19,519,216 9,759,608 4,879,804 2,439,902 1,219,951 3,659,854 1,829,927 5,489,782 2,744,891 8,234,674 4,117,337 12,352,012 6,176,006 3,088,003 9,264,010 4,632,005 13,896,016 6,948,008 3,474,004 1,737,002 868,501 2,605,504 1,302,752 651,376 325,688 162,844 81,422 40,711 122,134 61,067 183,202 91,601 274,804 137,402 68,701 206,104 103,052 51,526 25,763 77,290 38,645 115,936 57,968 28,984 14,492 7,246 3,623 10,870 5,435 16,306 8,153 24,460

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