It is a plaindrome in base 14.
2621248 is an apocalyptic number.
621248 is a gapful number since it is divisible by the number (68) 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 621248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
621248 is a wasteful number, since it uses less digits than its factorization.
621248 is an odious number, because the sum of its binary digits is odd.
The square root of 621248 is about 788.1928697977. The cubic root of 621248 is about 85.3273650340.
The spelling of 621248 in words is "six hundred twenty-one thousand, two hundred forty-eight".