λ
Sigma Notebook

128,996

22 × 7 × 17 × 271
Abundant Even Composite

128,996 is even and not a perfect square. Its factorization is 2^2 × 7 × 17 × 271 and its 24 divisors sum to 274,176.

Prime Factor Structure

Factorization String 2^2 × 7 × 17 × 271
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 274,176
Proper Divisor Sum 145,180
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #128993 ← → #129001

Radix Representation

Decimal 128996
Binary 11111011111100100 (17 bits)
Octal 0o373744
Hexadecimal 0x1F7E4

Divisor Catalog (24)

1 2 4 7 14 17 28 34 68 119 238 271 476 542 1,084 1,897 3,794 4,607 7,588 9,214 18,428 32,249 64,498 128,996

Collatz Trajectory (100 steps to reach 1)

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

128,996 64,498 32,249 96,748 48,374 24,187 72,562 36,281 108,844 54,422 27,211 81,634 40,817 122,452 61,226 30,613 91,840 45,920 22,960 11,480 5,740 2,870 1,435 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090 2,045 6,136 3,068 1,534 767 2,302 1,151 3,454 1,727 5,182 2,591 7,774 3,887 11,662 5,831 17,494 8,747 26,242 13,121 39,364 19,682 9,841 29,524

More profiles

← Previous Integer #128,995 Browse Full Index Next Integer #128,997 →