Adding to 40405200 its reverse (250404), we get a palindrome (40655604).
It is a tau number, because it is divible by the number of its divisors (120).
It is a self number, because there is not a number n which added to its sum of digits gives 40405200.
It is a congruent number.
It is an unprimeable number.
Almost surely, 240405200 is an apocalyptic number.
40405200 is a gapful number since it is divisible by the number (40) 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 40405200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70621968).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40405200 is a wasteful number, since it uses less digits than its factorization.
40405200 is an odious number, because the sum of its binary digits is odd.
The square root of 40405200 is about 6356.5084755705. The cubic root of 40405200 is about 343.1461155018.
The spelling of 40405200 in words is "forty million, four hundred five thousand, two hundred".