2,000,990

2 × 5 × 401 × 499

2,000,990 has the prime decomposition 2 × 5 × 401 × 499. Its 4 distinct prime factors produce 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 401 × 499

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,618,000

Proper Divisor Sum 1,617,010

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #2000989 ← → #2001037

Radix Representation

Decimal	2000990
Binary	111101000100001011110 (21 bits)
Octal	0o7504136
Hexadecimal	0x1E885E

Divisor Catalog (16)

1 2 5 10 401 499 802 998 2,005 2,495 4,010 4,990 200,099 400,198 1,000,495 2,000,990

Collatz Trajectory (91 steps to reach 1)

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

2,000,990 1,000,495 3,001,486 1,500,743 4,502,230 2,251,115 6,753,346 3,376,673 10,130,020 5,065,010 2,532,505 7,597,516 3,798,758 1,899,379 5,698,138 2,849,069 8,547,208 4,273,604 2,136,802 1,068,401 3,205,204 1,602,602 801,301 2,403,904 1,201,952 600,976 300,488 150,244 75,122 37,561 112,684 56,342 28,171 84,514 42,257 126,772 63,386 31,693 95,080 47,540 23,770 11,885 35,656 17,828 8,914 4,457 13,372 6,686 3,343 10,030 5,015 15,046 7,523 22,570 11,285 33,856 16,928 8,464 4,232 2,116

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