20,067
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|---|---|---|---|---|
| Cardinal | twenty thousand sixty-seven | |||
| Ordinal | 20067th (twenty thousand sixty-seventh) | |||
| Factorization | 3 × 6689 | |||
| Divisors | 1, 3, 6689, 20067 | |||
| Greek numeral | ͵ξζ´ | |||
| Roman numeral | XXLXVII, xxlxvii | |||
| Binary | 1001110011000112 | |||
| Ternary | 10001120203 | |||
| Senary | 2325236 | |||
| Octal | 471438 | |||
| Duodecimal | B74312 | |||
| Hexadecimal | 4E6316 | |||
20,067 (twenty thousand [and] sixty-seven) is the natural number following 20,066 and preceding 20,068.[1]
In mathematics
[edit]The prime factorization of 20067 is 3 * 6689, meaning that 20067 is a composite number with 4 divisors being 1, 3, 6689, and 20067.[1] It is a deficient number, because the sum of the divisors (excluding 20067 itself) is 6693, which is less than 20067.[2][1]
Boring number
[edit]As of September 2026, the number 20067 is a boring number, since it only appears once in the On-Line Encyclopedia of Integer Sequences.[3][4] It is also the smallest one.[5] This definition of uninteresting is possible only because the OEIS lists only a finite number of terms for each entry.[3] Being the smallest uninteresting number is considered interesting.[6]
In the OEIS sequence A379570, 20067 is the number of 5-digit numbers that have exactly 8 divisors.[7]
References
[edit]- 1 2 3 Vanovschi, Vitalii. "Properties of the number 20067". www.numberempire.com. Retrieved 2026-09-17.
- ↑ "The Positive Integer 20067". www.positiveintegers.org. Retrieved 2026-09-17.
- 1 2 Bischoff, Manon. "The Most Boring Number in the World Is ..." Scientific American. Retrieved 2026-09-17.
- ↑ Sloane, N. J. A. "Search: 20067". The On-Line Encyclopedia of Integer Sequences. Retrieved 2026-09-17.
- ↑ "Reviews". Mathematics Magazine. 96 (4): 479–480. 2023-08-08. doi:10.1080/0025570X.2023.2234204. ISSN 0025-570X.
- ↑ Chaitin, Gregory (May 2002). Paradoxes of Randomness (Report). CDMTCS Research Report Series. Centre for Discrete Mathematics and Theoretical Computer Science, University of Auckland. CDMTCS-188. Retrieved 2026-09-17.
- ↑ Sloane, N. J. A. (ed.). "Sequence A379570 (Number of n-digit numbers that have exactly 8 divisors)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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