240666340 has 24 divisors (see below), whose sum is σ = 506012472. Its totient is φ = 96149760.

The previous prime is 240666281. The next prime is 240666343. The reversal of 240666340 is 43666042.

It can be written as a sum of positive squares in 4 ways, for example, as 29138404 + 211527936 = 5398^2 + 14544^2 .

It is not an unprimeable number, because it can be changed into a prime (240666343) 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, 10680 + ... + 24400.

It is an arithmetic number, because the mean of its divisors is an integer number (21083853).

Almost surely, 2^240666340 is an apocalyptic number.

240666340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240666340 is an abundant number, since it is smaller than the sum of its proper divisors (265346132).

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

240666340 is a wasteful number, since it uses less digits than its factorization.

240666340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607 (or 14605 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 240666340 is about 15513.4245091147. The cubic root of 240666340 is about 622.0211012165.

The spelling of 240666340 in words is "two hundred forty million, six hundred sixty-six thousand, three hundred forty".