2004
2004 is the year of the Indian Ocean earthquake and tsunami.
- Even
- Composite
Where 2004 fits
Why 2004 is special
The magnitude 9.1 earthquake off Sumatra produced waves that killed around 230,000 people across fourteen countries, many of them hours after the quake and with no warning system in place. The Indian Ocean warning network exists because of it.
Factors & digit properties
- Divisors (12)
- 1, 2, 3, 4, 6, 12, 167, 334, 501, 668, 1002, 2004
- Prime factorisation
- 2^2 × 3 × 167
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 2004
- Binary
- 11111010100
- Octal
- 3724
- Hexadecimal
- 7d4
- Roman numeral
- MMIV
- Scientific notation
- 2.004 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
The Indian Ocean tsunami of 2004 struck without a warning system and Japan in 2011 had one. The difference in preparedness is visible in the outcomes at comparable magnitudes.
View 2011 →Other connections
- contrasts with2011
why?
Strength 0.50, confidence "high".
Science
The magnitude 9.1 earthquake off Sumatra in December 2004 produced a tsunami that killed around 230,000 people across fourteen countries. Many died hours after the quake, in places with no warning system and no reason to expect one. The Indian Ocean warning network was built because of it.
DocumentedSciencePeriod: 26 December 2004
Common questions
Is 2004 a prime number?
No, 2004 is not prime.
What are the factors of 2004?
The factors of 2004 are 1, 2, 3, 4, 6, 12, 167, 334, 501, 668, 1002, 2004.
What is 2004 in Roman numerals?
2004 in Roman numerals is MMIV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026