λ
Sigma Notebook

1,187,660

22 × 5 × 43 × 1381
Abundant Even Composite

1,187,660 is even and not a perfect square. Its factorization is 2^2 × 5 × 43 × 1381 and its 24 divisors sum to 2,553,936.

Prime Factor Structure

Factorization String 2^2 × 5 × 43 × 1381
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 2,553,936
Proper Divisor Sum 1,366,276
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1187657 ← → #1187687

Radix Representation

Decimal 1187660
Binary 100100001111101001100 (21 bits)
Octal 0o4417514
Hexadecimal 0x121F4C

Divisor Catalog (24)

1 2 4 5 10 20 43 86 172 215 430 860 1,381 2,762 5,524 6,905 13,810 27,620 59,383 118,766 237,532 296,915 593,830 1,187,660

Collatz Trajectory (284 steps to reach 1)

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

1,187,660 593,830 296,915 890,746 445,373 1,336,120 668,060 334,030 167,015 501,046 250,523 751,570 375,785 1,127,356 563,678 281,839 845,518 422,759 1,268,278 634,139 1,902,418 951,209 2,853,628 1,426,814 713,407 2,140,222 1,070,111 3,210,334 1,605,167 4,815,502 2,407,751 7,223,254 3,611,627 10,834,882 5,417,441 16,252,324 8,126,162 4,063,081 12,189,244 6,094,622 3,047,311 9,141,934 4,570,967 13,712,902 6,856,451 20,569,354 10,284,677 30,854,032 15,427,016 7,713,508 3,856,754 1,928,377 5,785,132 2,892,566 1,446,283 4,338,850 2,169,425 6,508,276 3,254,138 1,627,069

More profiles

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