λ
Sigma Notebook

1,976,390

2 × 5 × 13 × 23 × 661
Abundant Even Composite

1,976,390 is even and not a perfect square. Its factorization is 2 × 5 × 13 × 23 × 661 and its 32 divisors sum to 4,003,776.

Prime Factor Structure

Factorization String 2 × 5 × 13 × 23 × 661
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 4,003,776
Proper Divisor Sum 2,027,386
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #1976383 ← → #1976393

Radix Representation

Decimal 1976390
Binary 111100010100001000110 (21 bits)
Octal 0o7424106
Hexadecimal 0x1E2846

Divisor Catalog (32)

1 2 5 10 13 23 26 46 65 115 130 230 299 598 661 1,322 1,495 2,990 3,305 6,610 8,593 15,203 17,186 30,406 42,965 76,015 85,930 152,030 197,639 395,278 988,195 1,976,390

Collatz Trajectory (65 steps to reach 1)

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

1,976,390 988,195 2,964,586 1,482,293 4,446,880 2,223,440 1,111,720 555,860 277,930 138,965 416,896 208,448 104,224 52,112 26,056 13,028 6,514 3,257 9,772 4,886 2,443 7,330 3,665 10,996 5,498 2,749 8,248 4,124 2,062 1,031 3,094 1,547 4,642 2,321 6,964 3,482 1,741 5,224 2,612 1,306 653 1,960 980 490 245 736 368 184 92 46 23 70 35 106 53 160 80 40 20 10

More profiles

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