The Numbers form element acts as an input field which is restricted to numbers only.
By default, the element option is_currency is enabled so both the input field (from version 18.104.22.168) and the email value will be formatted as currency. In order to disable this, set the element option is_currency to no.
A slider and spinner can be attached to this form element.
In order to activate the slider option, enable the element option slider. The steps_slider option determines the incremental step value. You can also show pips indicators with the pips option. The steps_pips option is responsible for the pips gaps.
In order to activate the spinner option, enable the element option spinner. The steps_spinner option determines the incremental step value.