245 (number)
245 (two hundred [and] forty-five) is the natural number following 244 and preceding 246.
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|---|---|---|---|---|
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| Cardinal | two hundred forty-five | |||
| Ordinal | 245th (two hundred forty-fifth) | |||
| Factorization | 5 × 72 | |||
| Greek numeral | ΣΜΕ´ | |||
| Roman numeral | CCXLV | |||
| Binary | 111101012 | |||
| Ternary | 1000023 | |||
| Senary | 10456 | |||
| Octal | 3658 | |||
| Duodecimal | 18512 | |||
| Hexadecimal | F516 | |||
Additionally, 245 is:
- a composite number.
- a stella octangula number.
- palindromic in bases 34 (7734) and 48 (5548)
- a Harshad number in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases).
- the aliquot sum of any of these numbers: 723, 1195, 2563, 3859, 9259, 10123, 12283, 14659 and 14803
- part of the 97-aliquot tree. The aliquot sequence starting at 10222 is: 10222, 5978, 4624, 4893, 2595, 1581, 723, 245, 97, 1, 0
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