4,087,870

2 × 5 × 408787

Starting at 4,087,870, the Collatz iteration reaches 1 after 167 steps. The first transition is 2043935; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 408787

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 7,358,184

Proper Divisor Sum 3,270,314

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #4087847 ← → #4087873

Radix Representation

Decimal	4087870
Binary	1111100110000000111110 (22 bits)
Octal	0o17460076
Hexadecimal	0x3E603E

Divisor Catalog (8)

1 2 5 10 408,787 817,574 2,043,935 4,087,870

Collatz Trajectory (167 steps to reach 1)

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

4,087,870 2,043,935 6,131,806 3,065,903 9,197,710 4,598,855 13,796,566 6,898,283 20,694,850 10,347,425 31,042,276 15,521,138 7,760,569 23,281,708 11,640,854 5,820,427 17,461,282 8,730,641 26,191,924 13,095,962 6,547,981 19,643,944 9,821,972 4,910,986 2,455,493 7,366,480 3,683,240 1,841,620 920,810 460,405 1,381,216 690,608 345,304 172,652 86,326 43,163 129,490 64,745 194,236 97,118 48,559 145,678 72,839 218,518 109,259 327,778 163,889 491,668 245,834 122,917 368,752 184,376 92,188 46,094 23,047 69,142 34,571 103,714 51,857 155,572

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