264 (number) explained

264 (two hundred [and] sixty-four) is the natural number following 263 and preceding 265.

In mathematics

264 is an even composite number^[1] with three distinct prime factors (2³ × 3 × 11).^[2] 264 is a Harshad number in base ten,^[3] also divisible by each of its digits.

264 is the sum of all even composite numbers that are not the sum of two abundant numbers (not necessarily distinct): 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 26 + 28 + 34 + 46.^[4] The only other even number that is not the sum of two abundant numbers is the only even prime number, 2.

In technology

• Advanced Video Coding also known as "H-264"^[5]
• +264 is the telephone country code for Namibia^{[6] [7]}

Other fields

• The calendar years 264 AD and 264 BC
• The longest someone has gone without sleeping is 264 hours.^[8]
• NGC 264, a lenticular galaxy^[9]

Notes and References

1. Web site: Composite Number. Eric W.. Weisstein. mathworld.wolfram.com.
2. Web site: Number 264 - Facts about the integer. Numbermatics.
3. Web site: About The Number 264. June 12, 2023.
4. 2024-07-26 .
5. Web site: What is H.264? | Advanced Video Coding (AVC) | Cloudflare.
6. Web site: Phone Codes for Namibia - Full list of Namibia dialling codes. www.rebtel.com.
7. Web site: Number 264. The encyclopedia of numbers.
8. Web site: A Man Stayed Awake for 264 Hours and Set a Sleep Deprivation Record. March 27, 2021. Men's Health.
9. Web site: NGC 264 Galaxy (NGC 264) Facts - Universe Guide. Universe. Guide. www.universeguide.com.