40324240 has 40 divisors (see below), whose sum is σ = 102279168. Its totient is φ = 14663040.

The previous prime is 40324231. The next prime is 40324243. The reversal of 40324240 is 4242304.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (40324243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22032 + ... + 23791.

Almost surely, 2^40324240 is an apocalyptic number.

40324240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40324240 is an abundant number, since it is smaller than the sum of its proper divisors (61954928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40324240 is a wasteful number, since it uses less digits than its factorization.

40324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45847 (or 45841 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40324240 is about 6350.1370063960. The cubic root of 40324240 is about 342.9167746808.

Adding to 40324240 its reverse (4242304), we get a palindrome (44566544).

The spelling of 40324240 in words is "forty million, three hundred twenty-four thousand, two hundred forty".