λ
Sigma Notebook

1,981,133

7 × 112 × 2339
Deficient Odd Composite

1,981,133 is odd and not a perfect square. Its factorization is 7 × 11^2 × 2339 and its 12 divisors sum to 2,489,760.

Prime Factor Structure

Factorization String 7 × 11^2 × 2339
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 2,489,760
Proper Divisor Sum 508,627
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #1981099 ← → #1981141

Radix Representation

Decimal 1981133
Binary 111100011101011001101 (21 bits)
Octal 0o7435315
Hexadecimal 0x1E3ACD

Divisor Catalog (12)

1 7 11 77 121 847 2,339 16,373 25,729 180,103 283,019 1,981,133

Collatz Trajectory (184 steps to reach 1)

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

1,981,133 5,943,400 2,971,700 1,485,850 742,925 2,228,776 1,114,388 557,194 278,597 835,792 417,896 208,948 104,474 52,237 156,712 78,356 39,178 19,589 58,768 29,384 14,692 7,346 3,673 11,020 5,510 2,755 8,266 4,133 12,400 6,200 3,100 1,550 775 2,326 1,163 3,490 1,745 5,236 2,618 1,309 3,928 1,964 982 491 1,474 737 2,212 1,106 553 1,660 830 415 1,246 623 1,870 935 2,806 1,403 4,210 2,105

More profiles

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