The phrase "although this number" is correct and usable in written English.
It can be used to introduce a contrast or exception related to a specific number mentioned in the context.
Example: "Although this number seems high, it actually reflects the average for our industry."
Alternatives: "even though this figure" or "despite this amount".
The most recent confirmed toll is 37 people killed, although this number is likely to rise.
Initial reports said 20 people were wounded alongside those who died although this number was later revised downwards.
It is understood that about 12 staff have applied for voluntary redundancy, although this number has not been officially confirmed.
Only 500 of Norway's 20,000 registered hunters are women, although this number is growing.
The abdomen consists of a maximum of 11 segments, although this number commonly is reduced by fusion.
Gritty Yorkshire-set chase thriller Catch Me Daddy debuts with £37,700 from 24 sites, although this number includes a chunk of previews.
These can be distinguished in that most Lepidoptera caterpillars have prolegs on segments 3 through 6 and 10 of the abdomen, although this number may be reduced.
Leaders from more than 120 countries will attend the summit, although this number does not include Abbott, who will be in New York the following day for a UN meeting on security issues.
Although this number is up from the one-two working on them a year ago, he thought it was insufficient to catalog and review the 16 million documents from the Pius XII Papacy.
The ultra-conservative Kingdom executed at least 68 people between January and November in 2014, according to Human Rights Watch, although this number is as high as 87 in some reports.
Surveys conducted ever since have shown that a majority of people in the UK are in favour of the death penalty for the most serious of crimes, although this number is decreasing each year.
