208540 has 12 divisors (see below), whose sum is σ = 437976. Its totient is φ = 83408.

The previous prime is 208529. The next prime is 208553. The reversal of 208540 is 45802.

It is a happy number.

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, 5194 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (36498).

2²⁰⁸⁵⁴⁰ is an apocalyptic number.

208540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208540 is an abundant number, since it is smaller than the sum of its proper divisors (229436).

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

208540 is a wasteful number, since it uses less digits than its factorization.

208540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436 (or 10434 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 208540 is about 456.6618004607. The cubic root of 208540 is about 59.3011510307.

The spelling of 208540 in words is "two hundred eight thousand, five hundred forty".