208484140 has 24 divisors (see below), whose sum is σ = 440116992. Its totient is φ = 82955520.

The previous prime is 208484123. The next prime is 208484147. The reversal of 208484140 is 41484802.

It is not an unprimeable number, because it can be changed into a prime (208484147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23469 + ... + 31108.

It is an arithmetic number, because the mean of its divisors is an integer number (18338208).

Almost surely, 2^208484140 is an apocalyptic number.

208484140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208484140 is an abundant number, since it is smaller than the sum of its proper divisors (231632852).

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

208484140 is a wasteful number, since it uses less digits than its factorization.

208484140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54777 (or 54775 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 208484140 is about 14438.9798808642. The cubic root of 208484140 is about 592.9585571072.

The spelling of 208484140 in words is "two hundred eight million, four hundred eighty-four thousand, one hundred forty".