240138680 has 32 divisors (see below), whose sum is σ = 540777600. Its totient is φ = 95972736.

The previous prime is 240138677. The next prime is 240138751. The reversal of 240138680 is 86831042.

It is a congruent number.

It is an unprimeable number.

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, 68654 + ... + 72066.

It is an arithmetic number, because the mean of its divisors is an integer number (16899300).

Almost surely, 2^240138680 is an apocalyptic number.

240138680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240138680 is an abundant number, since it is smaller than the sum of its proper divisors (300638920).

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

240138680 is a wasteful number, since it uses less digits than its factorization.

240138680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183 (or 5179 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 240138680 is about 15496.4086161923. The cubic root of 240138680 is about 621.5661756442.

The spelling of 240138680 in words is "two hundred forty million, one hundred thirty-eight thousand, six hundred eighty".