140243680 has 24 divisors (see below), whose sum is σ = 331326072. Its totient is φ = 56097408.

The previous prime is 140243647. The next prime is 140243699. The reversal of 140243680 is 86342041.

140243680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438102 + ... + 438421.

It is an arithmetic number, because the mean of its divisors is an integer number (13805253).

Almost surely, 2^140243680 is an apocalyptic number.

140243680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140243680 is an abundant number, since it is smaller than the sum of its proper divisors (191082392).

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

140243680 is an equidigital number, since it uses as much as digits as its factorization.

140243680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876538 (or 876530 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 140243680 is about 11842.4524487118. The cubic root of 140243680 is about 519.5504991262.

The spelling of 140243680 in words is "one hundred forty million, two hundred forty-three thousand, six hundred eighty".