1,649,650

2 × 5² × 32993

Starting at 1,649,650, the Collatz iteration reaches 1 after 145 steps. The first transition is 824825; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2 × 5^2 × 32993

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 3,068,442

Proper Divisor Sum 1,418,792

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #1649647 ← → #1649651

Radix Representation

Decimal	1649650
Binary	110010010101111110010 (21 bits)
Octal	0o6225762
Hexadecimal	0x192BF2

Divisor Catalog (12)

1 2 5 10 25 50 32,993 65,986 164,965 329,930 824,825 1,649,650

Collatz Trajectory (145 steps to reach 1)

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

1,649,650 824,825 2,474,476 1,237,238 618,619 1,855,858 927,929 2,783,788 1,391,894 695,947 2,087,842 1,043,921 3,131,764 1,565,882 782,941 2,348,824 1,174,412 587,206 293,603 880,810 440,405 1,321,216 660,608 330,304 165,152 82,576 41,288 20,644 10,322 5,161 15,484 7,742 3,871 11,614 5,807 17,422 8,711 26,134 13,067 39,202 19,601 58,804 29,402 14,701 44,104 22,052 11,026 5,513 16,540 8,270 4,135 12,406 6,203 18,610 9,305 27,916 13,958 6,979 20,938 10,469

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