836 (number)
| ||||
|---|---|---|---|---|
| Cardinal | eight hundred thirty-six | |||
| Ordinal | 836th (eight hundred thirty-sixth) | |||
| Factorization | 22 × 11 × 19 | |||
| Greek numeral | ΩΛϚ´ | |||
| Roman numeral | 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.
In mathematics
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 untouchable number, i.e. there is no n such that sum of proper factors of n equals 836.
The square of 836 is the smallest palindromic square with an even number of digits: 698896 (there are neither 2-digit nor 4-digit palindromic squares). Note that this number can be rotated to another palindromic number 968869.
See also
- 836 (year)
- 836 Jole (asteroid)
- 836th Air Division, an inactive United States Air Force organization
- 836 Naval Air Squadron, a World War II organization in the British Navy
- Pi Arietis, designated as object 836 in the Bright Star catalogue
References
- ^ "Sloane's A006037 : Weird numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02.
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