 | This article relies largely or entirely on a single source .(January 2025) |
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| Cardinal | eight hundred thirty-six | |||
| Ordinal | 836th (eight hundred thirty-sixth) | |||
| Factorization | 22 × 11 × 19 | |||
| Greek numeral | ΩΛϚ´ | |||
| Roman numeral | DCCCXXXVI, dcccxxxvi | |||
| Binary | 11010001002 | |||
| Ternary | 10102223 | |||
| Senary | 35126 | |||
| Octal | 15048 | |||
| Duodecimal | 59812 | |||
| Hexadecimal | 34416 | |||
836 (eight hundred [and] thirty-six) is the natural number following 835 and preceding 837.
The factorization of 836 is 22 × 11 × 19, so its proper factors are 1, 2, 4, 11, 19, 22, 38, 44, 76, 209, and 418. They sum to 844. As this is greater than 836, it is an abundant number, but no subset sums to 836, so it is not a semiperfect number; therefore it is a weird number. [1] Besides, 836 is the smallest weird number that is also an untouchable number, i.e. there is no n such that the sum of proper factors of n equals 836. (The only smaller weird number, 70, is not untouchable, since σ(134) − 134 = 70)
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