It is an unprimeable number.
Almost surely, 240632320 is an apocalyptic number.
40632320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
40632320 is a droll number since its even prime factors and its odd prime factors have the same sum.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 40632320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50331552).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40632320 is an frugal number, since it uses more digits than its factorization.
40632320 is an odious number, because the sum of its binary digits is odd.
The square root of 40632320 is about 6374.3485941702. The cubic root of 40632320 is about 343.7878627165.
Adding to 40632320 its reverse (2323604), we get a palindrome (42955924).
The spelling of 40632320 in words is "forty million, six hundred thirty-two thousand, three hundred twenty".