Check the properties of a positive integer to enter the number in the search box. If you input two numbers separated by a space, the properties of the pair like GCD are shown. If you separate two numbers by a comma, the sequences containing those numbers are listed.
2 = 2
| Factor | Count |
|---|---|
| 2 | 1 |
1.41421356237309514547462185873883...
1.25992104989487319066654436028330...
0.5000000000000000
10
2
2
2
| Prime number | Yes |
| Hexagonal number | No |
| Perfect number | No |
| Deficient number | Yes |
| Abundant number | No |
| Mersenne number | No |
| Harshad number | Yes |
| Harmonic divisor number | No |
QR2 (sequence)
-1
Properties of the number 2: 2 has 2 divisors. The divisors of 2 are 1, 2 and the sum of them is 3. The factorization of 2 is 2. The square and cube of 2 are 4 and 8 respectively. The square root and cube root of 2 are 1.41421356237309514547462185873883... and 1.25992104989487319066654436028330.... The binary, octal, hexadecimal of 2 are 10, 2, 2. 2 is a prime number, not hexagonal number, not perfect number, deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.
0.90929742682568170941692642372800...
-0.41614683654714240690353221907571...
-2.18503986326151888874846918042749...
0.03489949670250096919188464994477...
0.99939082701909576211818375668372...
0.03492076949174773015105444073924...
0.69314718055994528622676398299518...
0.30102999566398119801746702250966...
1.00000000000000000000000000000000...