It is a happy number.
It is a Jordan-Polya number, since it can be written as 8! ⋅ (2!)8.
It is a double factorial (10321920 = 16 !! = 2 ⋅ 4 ⋅ 6 ⋅ 8 ⋅ 10 ⋅ 12 ⋅ 14 ⋅ 16 ).
It is a tau number, because it is divible by the number of its divisors (192).
It is a congruent number.
It is an unprimeable number.
Almost surely, 210321920 is an apocalyptic number.
10321920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 10321920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20446920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10321920 is an frugal number, since it uses more digits than its factorization.
10321920 is an evil number, because the sum of its binary digits is even.
The square root of 10321920 is about 3212.7745018909. The cubic root of 10321920 is about 217.7309477105.
The spelling of 10321920 in words is "ten million, three hundred twenty-one thousand, nine hundred twenty".