138 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred thirty-eight | |||
| Ordinal | 138th (one hundred thirty-eighth) | |||
| Factorization | 2 × 3 × 23 | |||
| Divisors | 1, 2, 3, 6, 23, 46, 69, 138 | |||
| Greek numeral | ΡΛΗ´ | |||
| Roman numeral | CXXXVIII | |||
| Binary | 100010102 | |||
| Ternary | 120103 | |||
| Senary | 3506 | |||
| Octal | 2128 | |||
| Duodecimal | B612 | |||
| Hexadecimal | 8A16 | |||
138 (one hundred [and] thirty-eight) is the natural number following 137 and preceding 139.
Mathematics
[edit]138 is a sphenic number,[1] an Ulam number,[2] an abundant number,[3] and a square-free congruent number.[4]
In media
[edit]- "We Are 138", a 1978 song by the American punk rock band Misfits.
- Who's Afraid of 138!? is a trance record label operated by Dutch DJ Armin van Buuren, as a reference to the use of 138 BPM in some forms of trance music.[5][6]
Notes
[edit]References
[edit]- ^ Sloane, N. J. A. (ed.). "Sequence A007304 (Sphenic numbers: products of 3 distinct primes.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-07-24.
- ^ Sloane, N. J. A. (ed.). "Sequence A002858 (Ulam numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-07-24.
- ^ Sloane, N. J. A. (ed.). "Sequence A005101 (Abundant numbers (sum of divisors of m exceeds 2m).)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-07-24.
- ^ Sloane, N. J. A. (ed.). "Sequence A006991 (Primitive congruent numbers.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-07-24.
- ^ "Who's Afraid Of 138?!". Armada Music. Retrieved 2023-07-25.
- ^ "Who's Afraid Of 138?!". Beatport. Retrieved 2023-07-25.