1,380,407

7 × 19 × 97 × 107

1,380,407 has digital root 5. The neighboring primes are 1380397 and 1380419; its proper-divisor sum differs from the starting integer by -1,067,374.

Prime Factor Structure

Factorization String 7 × 19 × 97 × 107

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,693,440

Proper Divisor Sum 313,033

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1380397 ← → #1380419

Radix Representation

Decimal	1380407
Binary	101010001000000110111 (21 bits)
Octal	0o5210067
Hexadecimal	0x151037

Divisor Catalog (16)

1 7 19 97 107 133 679 749 1,843 2,033 10,379 12,901 14,231 72,653 197,201 1,380,407

Collatz Trajectory (137 steps to reach 1)

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

1,380,407 4,141,222 2,070,611 6,211,834 3,105,917 9,317,752 4,658,876 2,329,438 1,164,719 3,494,158 1,747,079 5,241,238 2,620,619 7,861,858 3,930,929 11,792,788 5,896,394 2,948,197 8,844,592 4,422,296 2,211,148 1,105,574 552,787 1,658,362 829,181 2,487,544 1,243,772 621,886 310,943 932,830 466,415 1,399,246 699,623 2,098,870 1,049,435 3,148,306 1,574,153 4,722,460 2,361,230 1,180,615 3,541,846 1,770,923 5,312,770 2,656,385 7,969,156 3,984,578 1,992,289 5,976,868 2,988,434 1,494,217 4,482,652 2,241,326 1,120,663 3,361,990 1,680,995 5,042,986 2,521,493 7,564,480 3,782,240 1,891,120

← Previous Integer #1,380,406 Browse Full Index Next Integer #1,380,408 →