| ||||
|---|---|---|---|---|
| Cardinal | two hundred sixty-four | |||
| Ordinal | 264th (two hundred sixty-fourth) | |||
| Factorization | 23 × 3 × 11 | |||
| Divisors | 1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264 | |||
| Greek numeral | ΣΞΔ´ | |||
| Roman numeral | CCLXIV | |||
| Binary | 1000010002 | |||
| Ternary | 1002103 | |||
| Senary | 11206 | |||
| Octal | 4108 | |||
| Duodecimal | 1A012 | |||
| Hexadecimal | 10816 | |||
264 (two hundred [and] sixty-four) is the natural number following 263 and preceding 265.
264 is an even composite number [1] with three distinct prime factors (23 × 3 × 11). [2] 264 is a Harshad number in base ten, [3] also divisible by each of its digits.
264 is the sum of all even composite numbers that are not the sum of two abundant numbers (not necessarily distinct): 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 26 + 28 + 34 + 46. [4] The only other even number that is not the sum of two abundant numbers is the only even prime number, 2.
42 (forty-two) is the natural number that follows 41 and precedes 43.
23 (twenty-three) is the natural number following 22 and preceding 24.
28 (twenty-eight) is the natural number following 27 and preceding 29.
27 is the natural number following 26 and preceding 28.
69 is the natural number following 68 and preceding 70. An odd number and a composite number, 69 is divisible by 1, 3, 23 and 69. 69 is a semiprime because it is a natural number that is the product of exactly two prime numbers, and an interprime between the numbers of 67 and 71. Because 69 is not divisible by any square number other than 1, it is categorised as a square-free integer. 69 is also a Blum integer since the two factors of 69 are both Gaussian primes. In number theory, 69 is a deficient number, arithmetic number and a congruent number.
81 (eighty-one) is the natural number following 80 and preceding 82.
84 (eighty-four) is the natural number following 83 and preceding 85. It is seven dozens.
32 (thirty-two) is the natural number following 31 and preceding 33.
34 (thirty-four) is the natural number following 33 and preceding 35.
31 (thirty-one) is the natural number following 30 and preceding 32. It is a prime number.
39 (thirty-nine) is the natural number following 38 and preceding 40.
46 (forty-six) is the natural number following 45 and preceding 47.
48 (forty-eight) is the natural number following 47 and preceding 49. It is one third of a gross, or four dozens.
52 (fifty-two) is the natural number following 51 and preceding 53.
55 (fifty-five) is the natural number following 54 and preceding 56.
57 (fifty-seven) is the natural number following 56 and preceding 58.
65 (sixty-five) is the natural number following 64 and preceding 66.
91 (ninety-one) is the natural number following 90 and preceding 92.
92 (ninety-two) is the natural number following 91 and preceding 93.
94 (ninety-four) is the natural number following 93 and preceding 95.