90000 (number)
| ||||
|---|---|---|---|---|
| Cardinal | ninety thousand | |||
| Ordinal |
90000th (ninety thousandth) | |||
| Factorization | 24× 32× 54 | |||
| Roman numeral | XC | |||
| Binary | 101011111100100002 | |||
| Ternary | 111201101003 | |||
| Quaternary | 1113321004 | |||
| Quinary | 103400005 | |||
| Senary | 15324006 | |||
| Octal | 2576208 | |||
| Duodecimal | 4410012 | |||
| Hexadecimal | 15F9016 | |||
| Vigesimal | B50020 | |||
| Base 36 | 1XG036 | |||
90,000 (ninety thousand) is the natural number that comes after 89,999 and before 90,001.
Selected numbers in the range 90000–99999
- 90000 – sum of the cubes of the first 24 positive integers, square of 300.
- 90625 – the only five-digit automorphic number: 906252 = 8212890625
- 93312 – Leyland number: 66 + 66
- 94249 – palindromic square: 3072
- 94932 – Leyland number: 75 + 57
- 95121 – Kaprekar number: 951212 = 9048004641; 90480 + 04641 = 95121
- 96557 – Markov number: 52 + 64662 + 965572 = 3 × 5 × 6466 × 96557
- 99066 – largest number whose square uses all of the decimal digits once: 990662 = 9814072356. It is also a rotationally symmetric ambigram in decimal.
- 99991 - largest five-digit prime number
- 99999 – repdigit, Kaprekar number: 999992 = 9999800001; 99998 + 00001 = 99999
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