1,620,297

3³ × 7 × 8573

For 1,620,297, the 16 positive divisors have a total of 2,743,680. Removing 1,620,297 leaves 1,123,383, which gives the deficient classification.

Prime Factor Structure

Factorization String 3^3 × 7 × 8573

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 2,743,680

Proper Divisor Sum 1,123,383

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #1620271 ← → #1620319

1 3 7 9 21 27 63 189 8,573 25,719 60,011 77,157 180,033 231,471 540,099 1,620,297

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

1,620,297 4,860,892 2,430,446 1,215,223 3,645,670 1,822,835 5,468,506 2,734,253 8,202,760 4,101,380 2,050,690 1,025,345 3,076,036 1,538,018 769,009 2,307,028 1,153,514 576,757 1,730,272 865,136 432,568 216,284 108,142 54,071 162,214 81,107 243,322 121,661 364,984 182,492 91,246 45,623 136,870 68,435 205,306 102,653 307,960 153,980 76,990 38,495 115,486 57,743 173,230 86,615 259,846 129,923 389,770 194,885 584,656 292,328 146,164 73,082 36,541 109,624 54,812 27,406 13,703 41,110 20,555 61,666