8,171,688

2³ × 3 × 7 × 127 × 383

8,171,688 has digital root 3. The neighboring primes are 8171687 and 8171689; its proper-divisor sum differs from the starting integer by 7,249,584.

Prime Factor Structure

Factorization String 2^3 × 3 × 7 × 127 × 383

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Total Divisors 64

Divisor Sum (σ) 23,592,960

Proper Divisor Sum 15,421,272

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #8171687 ← → #8171689

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

8,171,688 4,085,844 2,042,922 1,021,461 3,064,384 1,532,192 766,096 383,048 191,524 95,762 47,881 143,644 71,822 35,911 107,734 53,867 161,602 80,801 242,404 121,202 60,601 181,804 90,902 45,451 136,354 68,177 204,532 102,266 51,133 153,400 76,700 38,350 19,175 57,526 28,763 86,290 43,145 129,436 64,718 32,359 97,078 48,539 145,618 72,809 218,428 109,214 54,607 163,822 81,911 245,734 122,867 368,602 184,301 552,904 276,452 138,226 69,113 207,340 103,670 51,835