3,908,890

2 × 5 × 390889

Starting at 3,908,890, the Collatz iteration reaches 1 after 247 steps. The first transition is 1954445; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 390889

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 7,036,020

Proper Divisor Sum 3,127,130

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #3908887 ← → #3908893

Radix Representation

Decimal	3908890
Binary	1110111010010100011010 (22 bits)
Octal	0o16722432
Hexadecimal	0x3BA51A

Divisor Catalog (8)

1 2 5 10 390,889 781,778 1,954,445 3,908,890

Collatz Trajectory (247 steps to reach 1)

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

3,908,890 1,954,445 5,863,336 2,931,668 1,465,834 732,917 2,198,752 1,099,376 549,688 274,844 137,422 68,711 206,134 103,067 309,202 154,601 463,804 231,902 115,951 347,854 173,927 521,782 260,891 782,674 391,337 1,174,012 587,006 293,503 880,510 440,255 1,320,766 660,383 1,981,150 990,575 2,971,726 1,485,863 4,457,590 2,228,795 6,686,386 3,343,193 10,029,580 5,014,790 2,507,395 7,522,186 3,761,093 11,283,280 5,641,640 2,820,820 1,410,410 705,205 2,115,616 1,057,808 528,904 264,452 132,226 66,113 198,340 99,170 49,585 148,756

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