I was about to say there are a good few tools smaller than that on my system, but I was one hundred percent wrong.

    # zsh glob for regular files that are smaller
    print -l /usr/bin/*(.L-39731)  # Some ~500 results
    # Not interpreted or using system libraries
    file /usr/bin/*(.L-39731) | egrep -v '(script|dynamically)'  # 0 results

Turns out there are only smaller things if you accept big caveats.