208128 has 36 divisors (see below), whose sum is σ = 555968. Its totient is φ = 69120.

The previous prime is 208121. The next prime is 208129. The reversal of 208128 is 821802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633 + ... + 903.

2²⁰⁸¹²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277984).

208128 is an abundant number, since it is smaller than the sum of its proper divisors (347840).

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

208128 is an equidigital number, since it uses as much as digits as its factorization.

208128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 208128 is about 456.2104777403. The cubic root of 208128 is about 59.2620727059.

The spelling of 208128 in words is "two hundred eight thousand, one hundred twenty-eight".