11,172
ISO/IEC 11172 is the MPEG-1 standard.
- Even
- Composite
Where 11,172 fits
Why 11,172 is special
Its audio layer III is the MP3, a format defined as part of a video specification and then used almost entirely without video.
Factors & digit properties
- Divisors (36)
- 1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 49, 57, 76, 84, 98, 114, 133, 147, 196, 228, 266, 294, 399, 532, 588, 798, 931, 1596, 1862, 2793, 3724, 5586, 11172
- Prime factorisation
- 2^2 × 3 × 7^2 × 19
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 11172
- Scientific notation
- 1.117 × 10^4
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 1 0 1 1 1 0 1 0 0 1 0 0
1 × 8,192 + 0 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 11,172
Octal
2 5 6 4 4
2 × 4,096 + 5 × 512 + 6 × 64 + 4 × 8 + 4 × 1 = 11,172
Hexadecimal
2 b a 4
2 × 4,096 + b × 256 + a × 16 + 4 × 1 = 11,172
Read as powers of two: 8,192 + 2,048 + 512 + 256 + 128 + 32 + 4 = 11,172.
In historical numeral systems
Egyptian
1 finger, 1 lotus, 1 coil of rope, 7 hobbles, 2 strokes
1 × 10,000 + 1 × 1,000 + 1 × 100 + 7 × 10 + 2 × 1 = 11,172. 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
Related numbers & connections
Lossy audio formats defined here are described by how far they reduce the CD's 1,411 kilobits per second.
View 1411 →Technology & computing
ISO/IEC 11172 defines MPEG-1 video and audio. Audio Layer III became known as MP3 and was adopted far more widely on its own than as part of the video system it was specified alongside.
DocumentedTechnology & computingGeography: International — ISO member bodiesPeriod: 1993–
Common questions
Is 11,172 a prime number?
No, 11,172 is not prime.
What are the factors of 11,172?
The factors of 11,172 are 1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 49, 57, 76, 84, 98, 114, 133, 147, 196, 228, 266, 294, 399, 532, 588, 798, 931, 1596, 1862, 2793, 3724, 5586, 11172.
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