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.
30 = 2 × 3 × 5
5.47722557505166118829720289795659...
3.10723250595385858119357180839870...
0.0333333333333333
11110
5
36
1e
| 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 |
QR30 (sequence)
-1
Properties of the number 30: 30 has 8 divisors. The divisors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 and the sum of them is 72. The factorization of 30 is 2 × 3 × 5. The square and cube of 30 are 900 and 27000 respectively. The square root and cube root of 30 are 5.47722557505166118829720289795659... and 3.10723250595385858119357180839870.... The binary, octal, hexadecimal of 30 are 11110, 36, 1e. 30 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.
-0.98803162409286182654710728456848...
0.15425144988758404673845348042960...
-6.40533119664627559330938311177306...
0.5
0.86602540378443870761060452423408...
0.57735026918962573105886804114562...
3.40119738166215546115722645481583...
1.47712125471966237988397097069537...
4.90689059560851870145370412501507...