4,369,220

2² × 5 × 218461

Starting at 4,369,220, the Collatz iteration reaches 1 after 87 steps. The first transition is 2184610; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 218461

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 9,175,404

Proper Divisor Sum 4,806,184

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #4369213 ← → #4369229

Radix Representation

Decimal	4369220
Binary	10000101010101101000100 (23 bits)
Octal	0o20525504
Hexadecimal	0x42AB44

Divisor Catalog (12)

1 2 4 5 10 20 218,461 436,922 873,844 1,092,305 2,184,610 4,369,220

Collatz Trajectory (87 steps to reach 1)

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

4,369,220 2,184,610 1,092,305 3,276,916 1,638,458 819,229 2,457,688 1,228,844 614,422 307,211 921,634 460,817 1,382,452 691,226 345,613 1,036,840 518,420 259,210 129,605 388,816 194,408 97,204 48,602 24,301 72,904 36,452 18,226 9,113 27,340 13,670 6,835 20,506 10,253 30,760 15,380 7,690 3,845 11,536 5,768 2,884 1,442 721 2,164 1,082 541 1,624 812 406 203 610 305 916 458 229 688 344 172 86 43 130

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