Do you mean "What is the biggest cubic number that is smaller than 1440?"
Lets see
$${{\mathtt{1\,440}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right)} = {\mathtt{11.292\: \!432\: \!346\: \!572\: \!34}}$$
$${{\mathtt{11}}}^{{\mathtt{3}}} = {\mathtt{1\,331}}$$
There you go, it is 1331
I am not usually any good at ferensic mathematics. I have to take lessons of CPhil.
Did I do good???
Do you mean "What is the biggest cubic number that is smaller than 1440?"
Lets see
$${{\mathtt{1\,440}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right)} = {\mathtt{11.292\: \!432\: \!346\: \!572\: \!34}}$$
$${{\mathtt{11}}}^{{\mathtt{3}}} = {\mathtt{1\,331}}$$
There you go, it is 1331
I am not usually any good at ferensic mathematics. I have to take lessons of CPhil.
Did I do good???