240840490 has 16 divisors (see below), whose sum is σ = 472923360. Its totient is φ = 87578320.

The previous prime is 240840473. The next prime is 240840491. The reversal of 240840490 is 94048042.

It is not an unprimeable number, because it can be changed into a prime (240840491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094620 + ... + 1094839.

It is an arithmetic number, because the mean of its divisors is an integer number (29557710).

Almost surely, 2^240840490 is an apocalyptic number.

240840490 is a deficient number, since it is larger than the sum of its proper divisors (232082870).

240840490 is a wasteful number, since it uses less digits than its factorization.

240840490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189477.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 240840490 is about 15519.0363747238. The cubic root of 240840490 is about 622.1710998366.

The spelling of 240840490 in words is "two hundred forty million, eight hundred forty thousand, four hundred ninety".