21,027,208

2³ × 2628401

21,027,208 factors as 2^3 × 2628401. Its 8 positive divisors give a proper-divisor sum of 18,398,822, so this integer is deficient. The Collatz stopping time is 71 steps.

Prime Factor Structure

Factorization String 2^3 × 2628401

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 39,426,030

Proper Divisor Sum 18,398,822

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #21027179 ← → #21027239

Radix Representation

Decimal	21027208
Binary	1010000001101100110001000 (25 bits)
Octal	0o120154610
Hexadecimal	0x140D988

Divisor Catalog (8)

1 2 4 8 2,628,401 5,256,802 10,513,604 21,027,208

Collatz Trajectory (71 steps to reach 1)

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

21,027,208 10,513,604 5,256,802 2,628,401 7,885,204 3,942,602 1,971,301 5,913,904 2,956,952 1,478,476 739,238 369,619 1,108,858 554,429 1,663,288 831,644 415,822 207,911 623,734 311,867 935,602 467,801 1,403,404 701,702 350,851 1,052,554 526,277 1,578,832 789,416 394,708 197,354 98,677 296,032 148,016 74,008 37,004 18,502 9,251 27,754 13,877 41,632 20,816 10,408 5,204 2,602 1,301 3,904 1,952 976 488 244 122 61 184 92 46 23 70 35 106

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