It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 29820.
It is an unprimeable number.
229820 is an apocalyptic number.
29820 is a gapful number since it is divisible by the number (20) 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 29820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48384).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
29820 is a wasteful number, since it uses less digits than its factorization.
29820 is an odious number, because the sum of its binary digits is odd.
The square root of 29820 is about 172.6846837447. The cubic root of 29820 is about 31.0100557042.
The spelling of 29820 in words is "twenty-nine thousand, eight hundred twenty".