20,067

← 20066 20067 20068 →
Cardinaltwenty thousand sixty-seven
Ordinal20067th
(twenty thousand sixty-seventh)
Factorization3 × 6689
Divisors1, 3, 6689, 20067
Greek numeral͵ξζ´
Roman numeralXXLXVII, xxlxvii
Binary1001110011000112
Ternary10001120203
Senary2325236
Octal471438
DuodecimalB74312
Hexadecimal4E6316

20,067 (twenty thousand [and] sixty-seven) is the natural number following 20,066 and preceding 20,068.

In mathematics

The prime factorization of 20067 is 3 * 6689, meaning that 20067 is a composite number with 4 divisors being 1, 3, 6689, and 20067. It is a deficient number, because the sum of the divisors (excluding 20067 itself) is 6693, which is less than 20067.

Boring number

In 2023, 20067 was noted for being a boring number, since it did not appear in the On-Line Encyclopedia of Integer Sequences. At the time it was the smallest such number, making it a candidate to resolve the Interesting number paradox.

Now the OEIS sequence A379570 contains 20067 as the number of 5-digit numbers that have exactly 8 divisors.

References

  1. 1 2 3 Vanovschi, Vitalii. "Properties of the number 20067". www.numberempire.com. Retrieved 2026-09-17.
  2. ↑ "The Positive Integer 20067". www.positiveintegers.org. Retrieved 2026-09-17.
  3. ↑ Bischoff, Manon. "The Most Boring Number in the World Is ..." Scientific American. Retrieved 2026-09-17.
  4. ↑ "Reviews". Mathematics Magazine. 96 (4): 479–480. 2023-08-08. doi:10.1080/0025570X.2023.2234204. ISSN 0025-570X.
  5. ↑ 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.