1,726,040

2³ × 5 × 43151

1,726,040 has digital root 2. The neighboring primes are 1726037 and 1726079; its proper-divisor sum differs from the starting integer by 431,600.

Prime Factor Structure

Factorization String 2^3 × 5 × 43151

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Total Divisors 16

Divisor Sum (σ) 3,883,680

Proper Divisor Sum 2,157,640

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #1726037 ← → #1726079

1 2 4 5 8 10 20 40 43,151 86,302 172,604 215,755 345,208 431,510 863,020 1,726,040

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

1,726,040 863,020 431,510 215,755 647,266 323,633 970,900 485,450 242,725 728,176 364,088 182,044 91,022 45,511 136,534 68,267 204,802 102,401 307,204 153,602 76,801 230,404 115,202 57,601 172,804 86,402 43,201 129,604 64,802 32,401 97,204 48,602 24,301 72,904 36,452 18,226 9,113 27,340 13,670 6,835 20,506 10,253 30,760 15,380 7,690 3,845 11,536 5,768 2,884 1,442 721 2,164 1,082 541 1,624 812 406 203 610 305