λ
Sequence Observatory

1,490,366

2 × 353 × 2111
Deficient Even Composite

Starting at 1,490,366, the Collatz iteration reaches 1 after 137 steps. The first transition is 745183; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 353 × 2111
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,242,944
Proper Divisor Sum 752,578
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1490353 ← → #1490369

Radix Representation

Decimal 1490366
Binary 101101011110110111110 (21 bits)
Octal 0o5536676
Hexadecimal 0x16BDBE

Divisor Catalog (8)

1 2 353 706 2,111 4,222 745,183 1,490,366

Collatz Trajectory (137 steps to reach 1)

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

1,490,366 745,183 2,235,550 1,117,775 3,353,326 1,676,663 5,029,990 2,514,995 7,544,986 3,772,493 11,317,480 5,658,740 2,829,370 1,414,685 4,244,056 2,122,028 1,061,014 530,507 1,591,522 795,761 2,387,284 1,193,642 596,821 1,790,464 895,232 447,616 223,808 111,904 55,952 27,976 13,988 6,994 3,497 10,492 5,246 2,623 7,870 3,935 11,806 5,903 17,710 8,855 26,566 13,283 39,850 19,925 59,776 29,888 14,944 7,472 3,736 1,868 934 467 1,402 701 2,104 1,052 526 263

More profiles

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