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.
40 = 2 × 2 × 2 × 5
6.32455532033675904557412650319748...
3.41995189335339366820676332281437...
0.0250000000000000
101000
6
50
28
| Prime number | No |
| Hexagonal number | No |
| Perfect number | No |
| Deficient number | No |
| Abundant number | No |
| Mersenne number | No |
| Harshad number | Yes |
| Harmonic divisor number | No |
QR40 (sequence)
0
Properties of the number 40: 40 has 8 divisors. The divisors of 40 are 1, 2, 4, 5, 8, 10, 20, 40 and the sum of them is 90. The factorization of 40 is 2 × 2 × 2 × 5. The square and cube of 40 are 1600 and 64000 respectively. The square root and cube root of 40 are 6.32455532033675904557412650319748... and 3.41995189335339366820676332281437.... The binary, octal, hexadecimal of 40 are 101000, 50, 28. 40 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.
0.74511316047934883499692659825087...
-0.66693806165226188209516067217919...
-1.11721493092389589918411729740910...
0.64278760968653925189641995530110...
0.76604444311897801345168090847437...
0.83909963117727992543137816028320...
3.68887945411393625150253683386836...
1.60205999132796250705723650753498...
5.32192809488736262579777758219279...