It is a happy number.
It is an unprimeable number.
22400432 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2400432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175392).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2400432 is a wasteful number, since it uses less digits than its factorization.
2400432 is an odious number, because the sum of its binary digits is odd.
The square root of 2400432 is about 1549.3327596098. The cubic root of 2400432 is about 133.8946227299.
Adding to 2400432 its reverse (2340042), we get a palindrome (4740474).
The spelling of 2400432 in words is "two million, four hundred thousand, four hundred thirty-two".