8,587,220

2² × 5 × 429361

Starting at 8,587,220, the Collatz iteration reaches 1 after 150 steps. The first transition is 4293610; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 429361

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 18,033,204

Proper Divisor Sum 9,445,984

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #8587207 ← → #8587231

Radix Representation

Decimal	8587220
Binary	100000110000011111010100 (24 bits)
Octal	0o40603724
Hexadecimal	0x8307D4

Divisor Catalog (12)

1 2 4 5 10 20 429,361 858,722 1,717,444 2,146,805 4,293,610 8,587,220

Collatz Trajectory (150 steps to reach 1)

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

8,587,220 4,293,610 2,146,805 6,440,416 3,220,208 1,610,104 805,052 402,526 201,263 603,790 301,895 905,686 452,843 1,358,530 679,265 2,037,796 1,018,898 509,449 1,528,348 764,174 382,087 1,146,262 573,131 1,719,394 859,697 2,579,092 1,289,546 644,773 1,934,320 967,160 483,580 241,790 120,895 362,686 181,343 544,030 272,015 816,046 408,023 1,224,070 612,035 1,836,106 918,053 2,754,160 1,377,080 688,540 344,270 172,135 516,406 258,203 774,610 387,305 1,161,916 580,958 290,479 871,438 435,719 1,307,158 653,579 1,960,738

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