λ
Sigma Notebook

2,187,840

26 × 3 × 5 × 43 × 53
Abundant Even Composite

2,187,840 is even and not a perfect square. Its factorization is 2^6 × 3 × 5 × 43 × 53 and its 112 divisors sum to 7,242,048.

Prime Factor Structure

Factorization String 2^6 × 3 × 5 × 43 × 53
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 112
Divisor Sum (σ) 7,242,048
Proper Divisor Sum 5,054,208
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #2187833 ← → #2187851

Radix Representation

Decimal 2187840
Binary 1000010110001001000000 (22 bits)
Octal 0o10261100
Hexadecimal 0x216240

Divisor Catalog (60 of 112)

1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 43 48 53 60 64 80 86 96 106 120 129 159 160 172 192 212 215 240 258 265 318 320 344 424 430 480 516 530 636 645 688 795 848 860 960 1,032 1,060 1,272 1,290 1,376 1,590 1,696 1,720 2,064

Collatz Trajectory (179 steps to reach 1)

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

2,187,840 1,093,920 546,960 273,480 136,740 68,370 34,185 102,556 51,278 25,639 76,918 38,459 115,378 57,689 173,068 86,534 43,267 129,802 64,901 194,704 97,352 48,676 24,338 12,169 36,508 18,254 9,127 27,382 13,691 41,074 20,537 61,612 30,806 15,403 46,210 23,105 69,316 34,658 17,329 51,988 25,994 12,997 38,992 19,496 9,748 4,874 2,437 7,312 3,656 1,828 914 457 1,372 686 343 1,030 515 1,546 773 2,320

More profiles

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