240440424 has 32 divisors (see below), whose sum is σ = 686973120. Its totient is φ = 68697216.

The previous prime is 240440407. The next prime is 240440429. The reversal of 240440424 is 424044042.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 240440394 and 240440403.

It is not an unprimeable number, because it can be changed into a prime (240440429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715429 + ... + 715764.

It is an arithmetic number, because the mean of its divisors is an integer number (21467910).

Almost surely, 2^240440424 is an apocalyptic number.

240440424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

240440424 is an abundant number, since it is smaller than the sum of its proper divisors (446532696).

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

240440424 is a wasteful number, since it uses less digits than its factorization.

240440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431209 (or 1431205 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 240440424 is about 15506.1414929698. The cubic root of 240440424 is about 621.8264077214.

Adding to 240440424 its reverse (424044042), we get a palindrome (664484466).

The spelling of 240440424 in words is "two hundred forty million, four hundred forty thousand, four hundred twenty-four".