30,000
Lightning heats its channel to roughly 30,000 kelvin — about five times the Sun's surface.
- Even
- Composite
Where 30,000 fits
Why 30,000 is special
The rapid expansion of that superheated air is thunder. Light and sound from the same event arrive at different times, which is why counting the gap gives the distance.
Factors & digit properties
- Divisors (50)
- 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 125, 150, 200, 240, 250, 300, 375, 400, 500, 600, 625, 750, 1000, 1200, 1250, 1500, 1875, 2000, 2500, 3000, 3750, 5000, 6000, 7500, 10000, 15000, 30000
- Prime factorisation
- 2^4 × 3 × 5^4
- Digit sum
- 3
- Digital root
- 3
Representations
- Decimal
- 30000
- Scientific notation
- 3.000 × 10^4
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 1 0 1 0 1 0 0 1 1 0 0 0 0
1 × 16,384 + 1 × 8,192 + 1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 0 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 30,000
Octal
7 2 4 6 0
7 × 4,096 + 2 × 512 + 4 × 64 + 6 × 8 + 0 × 1 = 30,000
Hexadecimal
7 5 3 0
7 × 4,096 + 5 × 256 + 3 × 16 + 0 × 1 = 30,000
Read as powers of two: 16,384 + 8,192 + 4,096 + 1,024 + 256 + 32 + 16 = 30,000.
In historical numeral systems
Egyptian
3 fingers
3 × 10,000 = 30,000. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Science
A lightning channel reaches around 30,000 K, several times the Sun's surface temperature, for a few millionths of a second. Thunder is the shockwave from air expanding at that temperature.
DocumentedScience
Common questions
Is 30,000 a prime number?
No, 30,000 is not prime.
What are the factors of 30,000?
The factors of 30,000 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 125, 150, 200, 240, 250, 300, 375, 400, 500, 600, 625, 750, 1000, 1200, 1250, 1500, 1875, 2000, 2500, 3000, 3750, 5000, 6000, 7500, 10000, 15000, 30000.
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: 15 July 2026