λ
Sigma Notebook

2,987,987

1597 × 1871
Deficient Odd Composite

2,987,987 is odd and not a perfect square. Its factorization is 1597 × 1871 and its 4 divisors sum to 2,991,456.

Prime Factor Structure

Factorization String 1597 × 1871
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,991,456
Proper Divisor Sum 3,469
Digit Sum / Digital Root 50 (Root: 5)
Adjacent Primes #2987983 ← → #2987989

Radix Representation

Decimal 2987987
Binary 1011011001011111010011 (22 bits)
Octal 0o13313723
Hexadecimal 0x2D97D3

Divisor Catalog (4)

1 1,597 1,871 2,987,987

Collatz Trajectory (213 steps to reach 1)

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

2,987,987 8,963,962 4,481,981 13,445,944 6,722,972 3,361,486 1,680,743 5,042,230 2,521,115 7,563,346 3,781,673 11,345,020 5,672,510 2,836,255 8,508,766 4,254,383 12,763,150 6,381,575 19,144,726 9,572,363 28,717,090 14,358,545 43,075,636 21,537,818 10,768,909 32,306,728 16,153,364 8,076,682 4,038,341 12,115,024 6,057,512 3,028,756 1,514,378 757,189 2,271,568 1,135,784 567,892 283,946 141,973 425,920 212,960 106,480 53,240 26,620 13,310 6,655 19,966 9,983 29,950 14,975 44,926 22,463 67,390 33,695 101,086 50,543 151,630 75,815 227,446 113,723

More profiles

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