λ
Sequence Observatory

635,470

2 × 5 × 11 × 53 × 109
Abundant Even Composite

Starting at 635,470, the Collatz iteration reaches 1 after 128 steps. The first transition is 317735; the starting value is even with 32 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 11 × 53 × 109
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 1,283,040
Proper Divisor Sum 647,570
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #635461 ← → #635471

Radix Representation

Decimal 635470
Binary 10011011001001001110 (20 bits)
Octal 0o2331116
Hexadecimal 0x9B24E

Divisor Catalog (32)

1 2 5 10 11 22 53 55 106 109 110 218 265 530 545 583 1,090 1,166 1,199 2,398 2,915 5,777 5,830 5,995 11,554 11,990 28,885 57,770 63,547 127,094 317,735 635,470

Collatz Trajectory (128 steps to reach 1)

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

635,470 317,735 953,206 476,603 1,429,810 714,905 2,144,716 1,072,358 536,179 1,608,538 804,269 2,412,808 1,206,404 603,202 301,601 904,804 452,402 226,201 678,604 339,302 169,651 508,954 254,477 763,432 381,716 190,858 95,429 286,288 143,144 71,572 35,786 17,893 53,680 26,840 13,420 6,710 3,355 10,066 5,033 15,100 7,550 3,775 11,326 5,663 16,990 8,495 25,486 12,743 38,230 19,115 57,346 28,673 86,020 43,010 21,505 64,516 32,258 16,129 48,388 24,194

More profiles

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