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.
90 = 2 × 3 × 3 × 5
9.48683298050513812427197990473360...
4.48140474655716403162841743323952...
0.0111111111111111
1011010
7
132
5a
| 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 |
QR90 (sequence)
0
Properties of the number 90: 90 has 12 divisors. The divisors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 and the sum of them is 234. The factorization of 90 is 2 × 3 × 3 × 5. The square and cube of 90 are 8100 and 729000 respectively. The square root and cube root of 90 are 9.48683298050513812427197990473360... and 4.48140474655716403162841743323952.... The binary, octal, hexadecimal of 90 are 1011010, 132, 5a. 90 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.
0.89399666360055785041538456425769...
-0.44807361612917012694268237282813...
-1.99520041220824206895656516280724...
1
0
infinity
4.49980967033026502122083911672235...
1.95424250943932475976794194139075...
6.49185309632967477710963066783734...