21 times 27 is 567. In symbols: 21 × 27 = 567, and 27 × 21 = 567 too.
21 × 27 means adding 21 to itself 27 times: that is 27 copies of 21, which add up to 567.
21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, ... (keep going to the 27th multiple). The 27th multiple of 21 is 567.
21 × 27 = 21 × 20 + 21 × 7 = 420 + 147 = 567.
567 ÷ 21 = 27
567 ÷ 27 = 21
567 is odd. Prime factorization: 3 × 3 × 3 × 3 × 7.
| Multiplication | Answer |
|---|---|
| 20 × 27 | 540 |
| 22 × 27 | 594 |
| 21 × 26 | 546 |
| 21 × 28 | 588 |
| 21 × 29 | 609 |
| 21 × 25 | 525 |
| 23 × 27 | 621 |
| 19 × 27 | 513 |
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.