|
||||
---|---|---|---|---|
Cardinal | two hundred ten | |||
Ordinal | 210th (two hundred tenth) |
|||
Factorization | 2 × 3 × 5 × 7 | |||
Divisors | 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 | |||
Roman numeral | CCX | |||
Binary | 110100102 | |||
Ternary | 212103 | |||
Quaternary | 31024 | |||
Quinary | 13205 | |||
Senary | 5506 | |||
Octal | 3228 | |||
Duodecimal | 15612 | |||
Hexadecimal | D216 | |||
Vigesimal | AA20 | |||
Base 36 | 5U36 |
210 (two hundred [and] ten) is the natural number following 209 and preceding 211.
210 is a composite number, an abundant number, and the product of the first four prime numbers (2, 3, 5, and 7), and thus a primorial. It is also the sum of eight consecutive prime numbers (13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 = 210).
It is a triangular number (following 190 and preceding 231), a pentagonal number (following 176 and preceding 247), and the second smallest to be both triangular and pentagonal (the third is 40755).
It is also a idoneal number, a pentatope number, a pronic number, a Harshad number, and an untouchable number. 210 is also the first 71-gonal number, preceding 418. It is the first primorial number greater than 2 which is not adjacent to 2 primes (211 is prime, but 209 is not).