1,628,402

2 × 197 × 4133

1,628,402 has digital root 5. The neighboring primes are 1628401 and 1628441; its proper-divisor sum differs from the starting integer by -801,208.

Prime Factor Structure

Factorization String 2 × 197 × 4133

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,455,596

Proper Divisor Sum 827,194

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1628401 ← → #1628441

Radix Representation

Decimal	1628402
Binary	110001101100011110010 (21 bits)
Octal	0o6154362
Hexadecimal	0x18D8F2

Divisor Catalog (8)

1 2 197 394 4,133 8,266 814,201 1,628,402

Collatz Trajectory (114 steps to reach 1)

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

1,628,402 814,201 2,442,604 1,221,302 610,651 1,831,954 915,977 2,747,932 1,373,966 686,983 2,060,950 1,030,475 3,091,426 1,545,713 4,637,140 2,318,570 1,159,285 3,477,856 1,738,928 869,464 434,732 217,366 108,683 326,050 163,025 489,076 244,538 122,269 366,808 183,404 91,702 45,851 137,554 68,777 206,332 103,166 51,583 154,750 77,375 232,126 116,063 348,190 174,095 522,286 261,143 783,430 391,715 1,175,146 587,573 1,762,720 881,360 440,680 220,340 110,170 55,085 165,256 82,628 41,314 20,657 61,972

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