λ
Sigma Notebook

6,987,780

22 × 32 × 5 × 38821
Abundant Even Composite

6,987,780 is even and not a perfect square. Its factorization is 2^2 × 3^2 × 5 × 38821 and its 36 divisors sum to 21,196,812.

Prime Factor Structure

Factorization String 2^2 × 3^2 × 5 × 38821
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 36
Divisor Sum (σ) 21,196,812
Proper Divisor Sum 14,209,032
Digit Sum / Digital Root 45 (Root: 9)
Adjacent Primes #6987769 ← → #6987793

Radix Representation

Decimal 6987780
Binary 11010101010000000000100 (23 bits)
Octal 0o32520004
Hexadecimal 0x6AA004

Divisor Catalog (36)

1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 38,821 77,642 116,463 155,284 194,105 232,926 349,389 388,210 465,852 582,315 698,778 776,420 1,164,630 1,397,556 1,746,945 2,329,260 3,493,890 6,987,780

Collatz Trajectory (129 steps to reach 1)

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

6,987,780 3,493,890 1,746,945 5,240,836 2,620,418 1,310,209 3,930,628 1,965,314 982,657 2,947,972 1,473,986 736,993 2,210,980 1,105,490 552,745 1,658,236 829,118 414,559 1,243,678 621,839 1,865,518 932,759 2,798,278 1,399,139 4,197,418 2,098,709 6,296,128 3,148,064 1,574,032 787,016 393,508 196,754 98,377 295,132 147,566 73,783 221,350 110,675 332,026 166,013 498,040 249,020 124,510 62,255 186,766 93,383 280,150 140,075 420,226 210,113 630,340 315,170 157,585 472,756 236,378 118,189 354,568 177,284 88,642 44,321

More profiles

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