Mastering Bitcoin: Where is the checksum coming from when running bx base58check-decode?

Question

For example, if I run bx base58check-decode with the base58 encoded private key of Kxj5ejwPg2s2ejZHW7N1zAydD4fkmFi9j19QRmgeVK9mXL3wFMmp from this example, I get the following:

{ checksum 2274467570 payload 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b982401 version 128 }

The payload, as well as the version, make sense to me; however, if I convert the checksum to a hex, it doesn't match the checksum of F29E9187 that I'm expecting, i.e., I understand how to form it per this question. But I don't understand how 2274467570 and F29E9187 are related.

Answer 1

decimal to hex, and then reversed ordering:

$ echo "obase=16;2274467570" | bc
87919EF2

reversed: 87 91 9E F2 -> F2 9E 91 87