What is Umart's Australian Business Number (ABN)? Grant August 25, 2017 02:33 Updated Follow Umart's ABN is 74 076 486 416. This can also be found at the top of all of our receipts. Related articles What is Umart Online's Phone Number? What does 24-48hrs mean? What are Umart's Postage / Shipping Fees? How do i change the Billing Address on my account? What are Umart's Trading Hours?